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{{Oscillator
{{Oscillator
|name            = Jason's p22
|name            = Jason's p22
|pname            = 36p22
|pname            = jasonsp22
|c                = 36
|c                = 36
|bx              = 27
|bx              = 27
Line 28: Line 28:
}}
}}
{{About|the 36-cell period-22 oscillator|the 22-cell period-36 oscillator|22P36}}
{{About|the 36-cell period-22 oscillator|the 22-cell period-36 oscillator|22P36}}
'''Jason's p22''' (or '''36P22''') is a {{period|22}} [[oscillator]] discovered by [[Jason Summers]] on August 27, {{year|2000}}.<ref>{{CiteSummersPattern|name=all-osc}}</ref> In this oscillator, an unnamed reaction is stabilized by two copies of [[eater 1]]. In terms of its {{cells|36|text=36 cells}}, it is the smallest known [[non-trivial]] period-22 oscillator, followed by [[Honey farm hasslers|p22 honey farm hassler]] with {{cells|40|text=40 cells}} and [[champagne glass]] with {{cells|45|text=45 cells}}.<ref>{{cite web|url=https://web.archive.org/web/20200728201617/http://pentadecathlon.com/objects/class2/class2.php?part=2 |title=Class 2 Objects Catalog |accessdate=April 9, 2009}}</ref>
'''Jason's p22''' (or '''36P22''') is a {{period|22}} [[oscillator]] discovered by [[Jason Summers]] on August 27, {{year|2000}}.<ref>{{CiteSummersPattern|name=all-osc}}</ref> In this oscillator, an unnamed reaction is stabilized by two copies of [[eater 1]]. In terms of its {{cells|36|text=36 cells}}, it is the smallest known [[non-trivial]] period-22 oscillator, followed by [[Honey farm hasslers|p22 honey farm hassler]] with {{cells|40|text=40 cells}}, a [[Pi-heptomino hasslers|p22 pi-heptomino hassler]] with 42 cells, and [[champagne glass]] with {{cells|45|text=45 cells}}.<ref>{{cite web|url=https://web.archive.org/web/20200728201617/http://pentadecathlon.com/objects/class2/class2.php?part=2 |title=Class 2 Objects Catalog |accessdate=April 9, 2009}}</ref>


Jason's p22 gives off [[spark]]s, which in addition to allowing for the construction of non-trivial higher-period oscillators as seen in a [[#LCM oscillators|later section]], can be used to [[hassle]] various patterns shown in [[#Gallery|gallery]] below. Later on the day of the oscillator's discovery, [[David Eppstein]] found a way to combine two of them to produce the first [[true period|true]] [[period-22 glider gun]].
Jason's p22 gives off [[spark]]s, which in addition to allowing for the construction of non-trivial higher-period oscillators as seen in a [[#LCM oscillators|later section]], can be used to [[hassle]] various patterns shown in [[#Gallery|gallery]] below. Later on the day of the oscillator's discovery, [[David Eppstein]] found a way to combine two of them to produce the first [[true period|true]] [[period-22 glider gun]].
Line 34: Line 34:
On August 12, {{year|2022}}, this oscillator appeared [[semi-natural]]ly for the first time, in a symmetric [[soup]] found by the [[Open Science Grid]].<ref name="post149483" />
On August 12, {{year|2022}}, this oscillator appeared [[semi-natural]]ly for the first time, in a symmetric [[soup]] found by the [[Open Science Grid]].<ref name="post149483" />


==Glider synthesis==
== Glider synthesis ==
 
In February {{year|2001}}, Jason Summers found a {{gliders|12}} [[synthesis]] of this oscillator,<ref>{{CiteSummersPattern|name=jslife}}</ref> which was improved to {{gliders|11|text=11 gliders}} by [[2718281828]] in December {{year|2017}}<ref name="post53462" /> and later to {{gliders|10|text=10 gliders}} by [[Mark Niemiec]] in September {{year|2019}}.<ref name="post83462" />
In February {{year|2001}}, Jason Summers found a {{gliders|12}} [[synthesis]] of this oscillator,<ref>{{CiteSummersPattern|name=jslife}}</ref> which was improved to {{gliders|11|text=11 gliders}} by [[2718281828]] in December {{year|2017}}<ref name="post53462" /> and later to {{gliders|10|text=10 gliders}} by [[Mark Niemiec]] in September {{year|2019}}.<ref name="post83462" />


==LCM oscillators==
== LCM oscillators ==
 
The [[LCM oscillator]]s below are the smallest known ones by population while satisfying the condition that at least one cell oscillates at the full period.
The [[LCM oscillator]]s below are the smallest known ones by population while satisfying the condition that at least one cell oscillates at the full period.
{{gallery top}}
{{gallery top}}
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|style        = width:300px;
|style        = width:300px;
|apgcode      = xp462_y9178cwggg2y2oo4kozy8g8gy035433y28111w62sgzy3o44ow1woozccy1ehidzx4a4
|apgcode      = xp462_y9178cwggg2y2oo4kozy8g8gy035433y28111w62sgzy3o44ow1woozccy1ehidzx4a4
}}}}
{{gallery item|{{EmbedViewer
|rle = x = 35, y = 34, rule = B3/S23
4b2o$4bo$o4b3o7bo$3o4bo6b2o$3bo10b2o$2b2o10bo$20b2o$20bo$3b2o13bobo$3b
2o13b2o2$8b2o$8b2ob2o$7bo3b2o$8b2o3bo8bo$8b2ob2o9bo$2b2o7b2o$2bo2bo$3b
3o$8bo$5b4o$5bo$6bo$5b2o$33b2o$33bo$15b3o13bobo$14bo3bo8bo3b2o$13bo4b
o6b2obo$14bob2o6bo4bo$10b2o3bo8bo3bo$9bobo13b3o$9bo$8b2o!
viewerconfig = #C [[ THUMBSIZE 2 ZOOM 6 GPS 22 ]]
|position    = center
|caption      = p572 with p52 [[Lumps of muck hasslers#p52| LOM hassler]]/banana sparker
|style        = width:300px;
|apgcode      = xp572_c88g354cy1g448zw1poy511woge2zy3s2m2c4ozw6a8cwh12321zy1bd11ykggzyasqiccy1gh8oow643zy48e13y14y211221
}}}}
}}}}
{{gallery bottom}}
{{gallery bottom}}


==Gallery==
== Gallery ==
{{gallery top}}
{{gallery top}}
{{gallery item|{{EmbedViewer
{{gallery item|{{EmbedViewer
Line 132: Line 142:
{{gallery bottom}}
{{gallery bottom}}


==See also==
== See also ==
* [[30P25]], another rotationally symmetric oscillator consisting of an [[active reaction]] supported by two fishhooks
* [[30P25]], another rotationally symmetric oscillator consisting of an [[active reaction]] supported by two fishhooks


==References==
== References ==
<references>
<references>
<ref name="post22809">{{LinkForumThread
<ref name="post22809">{{LinkForumThread
Line 192: Line 202:
* {{LinkPentadecathlonObject|36P22.1}}
* {{LinkPentadecathlonObject|36P22.1}}


{{Symmetry|180degree}}
{{Sparker|p=22|type=non-reflecting duoplet|strength=strong}}
{{Sparker|p=22|type=non-reflecting duoplet|strength=strong}}
{{Seminatural}}
{{Seminatural}}
__NOTOC__
__NOTOC__

Latest revision as of 19:00, 22 July 2025

Jason's p22
x = 27, y = 10, rule = B3/S23 2o$bo$bobo13b3o$2b2o3bo8bo3bo$6bob2o6bo4bo$5bo4bo6b2obo$6bo3bo8bo3b2o$ 7b3o13bobo$25bo$25b2o! #C [[ THUMBSIZE 2 THEME 6 GRID GRIDMAJOR 0 SUPPRESS THUMBLAUNCH ]] #C [[ AUTOSTART ]] #C [[ GPS 5 ZOOM 18 LOOP 22 ]]
View animated image
View static image
Pattern type Oscillator
Number of cells 36
Bounding box 27 × 14
Period 22 (mod: 22)
Heat 35.6
Volatility 0.93 | 0.93
Kinetic symmetry .e
Discovered by Jason Summers
Year of discovery 2000
This article is about the 36-cell period-22 oscillator. For the 22-cell period-36 oscillator, see 22P36.

Jason's p22 (or 36P22) is a period-22 oscillator discovered by Jason Summers on August 27, 2000.[1] In this oscillator, an unnamed reaction is stabilized by two copies of eater 1. In terms of its 36 cells, it is the smallest known non-trivial period-22 oscillator, followed by p22 honey farm hassler with 40 cells, a p22 pi-heptomino hassler with 42 cells, and champagne glass with 45 cells.[2]

Jason's p22 gives off sparks, which in addition to allowing for the construction of non-trivial higher-period oscillators as seen in a later section, can be used to hassle various patterns shown in gallery below. Later on the day of the oscillator's discovery, David Eppstein found a way to combine two of them to produce the first true period-22 glider gun.

On August 12, 2022, this oscillator appeared semi-naturally for the first time, in a symmetric soup found by the Open Science Grid.[3]

Glider synthesis

In February 2001, Jason Summers found a 12-glider synthesis of this oscillator,[4] which was improved to 11 gliders by 2718281828 in December 2017[5] and later to 10 gliders by Mark Niemiec in September 2019.[6]

LCM oscillators

The LCM oscillators below are the smallest known ones by population while satisfying the condition that at least one cell oscillates at the full period.

x = 33, y = 13, rule = B3/S23 27bo$25bo3b4o$25bo3bo$2o23bo$bo26bo$bobo13b3o6b2o$2b2o3bo8bo3bo$6bob2o 6bo4bo$5bo4bo6b2obo$6bo3bo8bo3b2o$7b3o13bobo$25bo$25b2o! #C [[ THUMBSIZE 2 THEME 6 GRID GRIDMAJOR 0 SUPPRESS THUMBLAUNCH ]] #C [[ THUMBSIZE 2 ZOOM 12 GPS 22 ]]
p66 with caterer
(click above to open LifeViewer)
RLE: here Plaintext: here
Catagolue: here
x = 35, y = 14, rule = B3/S23 23b2o$23bo$25b2o2$2o24bobo$bo$bobo13b3o8bobo$2b2o3bo8bo3bo$6bob2o6bo4b o8bobo$5bo4bo6b2obo11bo$6bo3bo8bo3b2o9bo$7b3o13bobo7b2o$25bo$25b2o! #C [[ THUMBSIZE 2 THEME 6 GRID GRIDMAJOR 0 SUPPRESS THUMBLAUNCH ]] #C [[ THUMBSIZE 2 ZOOM 12 GPS 22 ]]
p110 with pseudo-barberpole
(click above to open LifeViewer)
RLE: here Plaintext: here
Catagolue: here
x = 37, y = 20, rule = B3/S23 27b2o5b2o$28bo5bo3$29b2ob2o2$28bobobobo$27bo7bo$26bo2bo3bo2bo$26b3o5b 3o$2o$bo$bobo13b3o$2b2o3bo8bo3bo6b2o5b2o$6bob2o6bo4bo5b2o5b2o$5bo4bo6b 2obo$6bo3bo8bo3b2o$7b3o13bobo$25bo$25b2o! #C [[ THUMBSIZE 2 THEME 6 GRID GRIDMAJOR 0 SUPPRESS THUMBLAUNCH ]] #C [[ THUMBSIZE 2 ZOOM 12 GPS 22 ]]
p154 with 34P14 shuttle
(click above to open LifeViewer)
RLE: here Plaintext: here
Catagolue: here
x = 40, y = 15, rule = B3/S23 26b2o5bo$24bo2bo4bo$33bo2b2o$30b2obobo2bo$24bo4b2o2b2o4bo$2o23bo2bobob 2o$bo24b2o2bo$bobo13b3o11bo4bo2bo$2b2o3bo8bo3bo9bo5b2o$6bob2o6bo4bo$5b o4bo6b2obo$6bo3bo8bo3b2o$7b3o13bobo$25bo$25b2o! #C [[ THUMBSIZE 2 THEME 6 GRID GRIDMAJOR 0 SUPPRESS THUMBLAUNCH ]] #C [[ THUMBSIZE 2 ZOOM 12 GPS 22 ]]
p154 with 34P7
(click above to open LifeViewer)
RLE: here Plaintext: here
Catagolue: here
x = 24, y = 40, rule = B3/S23 5b2o$5b2o2$bo$obo$bo$5b2ob2o$5b2o3bo$4bo6bo$4bo6bo$5bo3b2o$6b2ob2o$14b o$13bobo7bo$14bo6b3o$20bo$9b2o9b2o$9b2o$18bo$17bobo$16bo3bo$16bo2bo$ 16bo2bo$17b2o6$19b2o$18bo2bo$18bo2bo$17bo3bo$18bobo$19bo2$16b2o$17bo$ 14b3o$14bo! #C [[ THUMBSIZE 2 THEME 6 GRID GRIDMAJOR 0 SUPPRESS THUMBLAUNCH ]] #C [[ THUMBSIZE 2 ZOOM 6 GPS 22 ]]
p462 with 32P21
(click above to open LifeViewer)
Catagolue: here
x = 35, y = 34, rule = B3/S23 4b2o$4bo$o4b3o7bo$3o4bo6b2o$3bo10b2o$2b2o10bo$20b2o$20bo$3b2o13bobo$3b 2o13b2o2$8b2o$8b2ob2o$7bo3b2o$8b2o3bo8bo$8b2ob2o9bo$2b2o7b2o$2bo2bo$3b 3o$8bo$5b4o$5bo$6bo$5b2o$33b2o$33bo$15b3o13bobo$14bo3bo8bo3b2o$13bo4b o6b2obo$14bob2o6bo4bo$10b2o3bo8bo3bo$9bobo13b3o$9bo$8b2o! viewerconfig = #C [[ THUMBSIZE 2 ZOOM 6 GPS 22 ]] #C [[ THUMBSIZE 2 THEME 6 GRID GRIDMAJOR 0 SUPPRESS THUMBLAUNCH ]]
p572 with p52 LOM hassler/banana sparker
(click above to open LifeViewer)
Catagolue: here


x = 49, y = 31, rule = B3/S23 22b2o7bo$23bo8bo2bo$23bobo4bo4bo4b2o$24b2o13bo2bo$29bo8b2ob2o$28b2ob2o 8bo$28bo2bo13b2o$29b2o4bo4bo4bobo$35bo2bo8bo$39bo7b2o4$23bo8b2o$16bo5b 2o7bobo$15bobo3bo10bo$15b2o5bobo$22bobo2$19b2o$2o16bo2bo$bo16b2obo$bob o4b3o5bo2b2o$2b2o4bobo4bo$7bo3bo3bo3bo$7bo3bo3bo3bo$11bo4bobo4b2o$6b2o 2bo5b3o4bobo$5bob2o16bo$5bo2bo16b2o$6b2o! #C [[ THUMBSIZE 2 THEME 6 GRID GRIDMAJOR 0 SUPPRESS THUMBLAUNCH ]] #C [[ HEIGHT 460 WIDTH 600 THUMBSIZE 2 ZOOM 12 GPS 22 ]]
p22 lumps of muck hassler, found by praosylen (September 2015)[7]; the boats can be replaced by blocks. This has since been reduced to eliminate the Jason's p22; see Lumps of muck hasslers#p22. (Catagolue: here)
(click above to open LifeViewer)
RLE: here Plaintext: here
Catagolue: here
x = 49, y = 38, rule = B3/S23 22b2o$23bo$23bobo13b3o$24b2o3bo8bo3bo$28bob2o6bo4bo$27bo4bo6b2obo$28b o3bo8bo3b2o$29b3o13bobo$47bo$47b2o5$25b2o$24bobo$23b2obo$12b2o10b2o7b 2o$13bo11bo7bobo$13bobo7bo11bo$14b2o7b2o10b2o$22bob2o$22bobo$22b2o5$2o $bo$bobo13b3o$2b2o3bo8bo3bo$6bob2o6bo4bo$5bo4bo6b2obo$6bo3bo8bo3b2o$7b 3o13bobo$25bo$25b2o! #C [[ THUMBSIZE 2 THEME 6 GRID GRIDMAJOR 0 SUPPRESS THUMBLAUNCH ]] #C [[ HEIGHT 500 WIDTH 600 THUMBSIZE 2 ZOOM 12 GPS 22 ]]
p22 B-heptomino hassler, found by David Raucci (November 2021)[8]
(click above to open LifeViewer)
RLE: here Plaintext: here
Catagolue: here
x = 72, y = 25, rule = B3/S23 17bo36bo$16bobo6b2o18b2o6bobo$13b2o3bo6bo20bo6bo3b2o$7b2o5b3o6bobo20b obo6b3o5b2o$6bo2bo7bo5b2o22b2o5bo7bo2bo$7b2o9b2o32b2o9b2o$7b2o9b2o32b 2o9b2o$2b2o5bo7bo2bo30bo2bo7bo5b2o$bobo6b3o5b2o32b2o5b3o6bobo$bo6bo3b 2o17bob2o2b2obo17b2o3bo6bo$2o6bobo18bo3b2o2b2o3bo18bobo6b2o$9bo19bo12b o19bo$30bo10bo$19bo32bo$2o16bobo30bobo16b2o$bo19bo28bo19bo$bobo13bo2b o30bo2bo13bobo$2b2o4b3o5b2o36b2o5b3o4b2o$7bo2bo8bo32bo8bo2bo$7bo8bo2b o32bo2bo8bo$9b2o5b3o4b2o22b2o4b3o5b2o$6bo2bo13bobo20bobo13bo2bo$5bo19b o20bo19bo$6bobo16b2o18b2o16bobo$7bo56bo! #C [[ THUMBSIZE 2 THEME 6 GRID GRIDMAJOR 0 SUPPRESS THUMBLAUNCH ]] #C [[ THUMBSIZE 2 ZOOM 8 GPS 22 ]]
p110 century shuttle, found by David Raucci (February 2022)[9]; similar to diuresis
(click above to open LifeViewer)
RLE: here Plaintext: here
Catagolue: here
x = 27, y = 16, rule = B3/S23 23b2o$22bo2bo$22bobo$23bob2o$24b3o$25b2o$2o$bo$bobo13b3o$2b2o3bo8bo3bo $6bob2o6bo4bo$5bo4bo6b2obo$6bo3bo8bo3b2o$7b3o13bobo$25bo$25b2o! #C [[ THUMBSIZE 2 THEME 6 GRID GRIDMAJOR 0 SUPPRESS THUMBLAUNCH ]] #C [[ THUMBSIZE 2 ZOOM 10 GPS 22 ]]
p44 mold on Jason's p22, smallest known non-trivial p44 oscillator until 2016 discovery of mold on rattlesnake
(click above to open LifeViewer)
RLE: here Plaintext: here
Catagolue: here
x = 88, y = 51, rule = B3/S23 61b2o7bo$62bo8bo2bo$62bobo4bo4bo4b2o$58b2o3b2o13bo2bo$58b2o8bo8b2ob2o $67b2ob2o8bo$67bo2bo13b2o$53b2o3bobo7b2o4bo4bo4bobo$53b2o3bo2bo12bo2b o8bo$58bobo17bo7b2o4$58bo$44b2o12b3o$44b2o2$48bo$39b2o6bobo2b3o$39b2o 20b2o$47b3o2bobo6b2o$53bo2$56b2o$41b3o12b2o$30b2o11bo$30b2o3$25b2o3bo bo8bobo$25b2o3bo2bo6bo2bo3b2o$30bobo8bobo3b2o3$42b2o$30bo11b2o$30b3o3$ 19b2o$2o16bo2bo2b3o$bo16b2obo11b2o$bobo4b3o5bo2b2o3bobo6b2o$2b2o4bobo 4bo9bo$7bo3bo3bo3bo$7bo3bo3bo3bo8b2o$11bo4bobo4b2o3b2o$6b2o2bo5b3o4bo bo$5bob2o16bo$5bo2bo16b2o$6b2o! #C [[ THUMBSIZE 2 THEME 6 GRID GRIDMAJOR 0 SUPPRESS THUMBLAUNCH ]] #C [[ HEIGHT 500 WIDTH 800 THUMBSIZE 2 ZOOM 8 GPS 22 ]]
Extensible p22 traffic light hassler, found by Matthias Merzenich (June 2021)[10]
(click above to open LifeViewer)
RLE: here Plaintext: here
Catagolue: here


See also

  • 30P25, another rotationally symmetric oscillator consisting of an active reaction supported by two fishhooks

References

  1. ↑ Jason Summers' all-osc pattern collection.
  2. ↑ "Class 2 Objects Catalog". Retrieved on April 9, 2009.
  3. ↑ Ian07 (August 12, 2022). Re: Soup search results (discussion thread) at the ConwayLife.com forums
  4. ↑ Jason Summers' jslife pattern collection.
  5. ↑ 2718281828 (December 6, 2017). Re: Synthesising Oscillators (discussion thread) at the ConwayLife.com forums
  6. ↑ Mark Niemiec (September 30, 2019). Re: Synthesising Oscillators (discussion thread) at the ConwayLife.com forums
  7. ↑ praosylen (September 20, 2015). Re: Thread For Your Accidental Discoveries (discussion thread) at the ConwayLife.com forums
  8. ↑ David Raucci (November 2, 2021). Re: Oscillator Discussion Thread (discussion thread) at the ConwayLife.com forums
  9. ↑ David Raucci (February 17, 2022). Re: Oscillator Discussion Thread (discussion thread) at the ConwayLife.com forums
  10. ↑ Matthias Merzenich (June 16, 2021). Re: Oscillator Discussion Thread (discussion thread) at the ConwayLife.com forums
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