120P7

120P7
x = 25, y = 25, rule = B3/S23 8bo7bo$6bo3bo3bo3bo$5bo4bo3bo4bo$11bobo$7b3obobob3o$2bo4bo3bobo3bo4bo$ bo9bobo9bo$4b2o5bobo5b2o$o3bo6bobo6bo3bo$4bo5bo3bo5bo$b2o6bo5bo6b2o$3b 6o7b6o2$3b6o7b6o$b2o6bo5bo6b2o$4bo5bo3bo5bo$o3bo6bobo6bo3bo$4b2o5bobo 5b2o$bo9bobo9bo$2bo4bo3bobo3bo4bo$7b3obobob3o$11bobo$5bo4bo3bo4bo$6bo 3bo3bo3bo$8bo7bo! #C [[ THUMBSIZE 2 THEME 6 GRID GRIDMAJOR 0 SUPPRESS THUMBLAUNCH ]] #C [[ AUTOSTART ]] #C [[ THUMBSIZE 2 ZOOM 10 GPS 3 ]]
View static image
Pattern type	Oscillator
Number of cells	120
Bounding box	25 × 25
Period	7 (mod: 7)
Heat	109.7
Volatility	0.93 | 0.93
Kinetic symmetry	*c
Discovered by	Unknown
Year of discovery	Unknown
Rules Outer-totalistic rules B3/S23 – B38/S2378 # of rules 23 = 8 Isotropic rules B3-cky/S23-a – B34cryz5ij6ce7e8/S234cejkz5aeknr6in78
Glider synthesis Fewest gliders 96† Catagolue-generated RLE synthesis †Can be constructed with 15 gliders using the reverse caber tosser universal constructor.
Pattern files Plaintext 120p7.cells RLE 120p7.rle
Identifiers apgcode xp7_wg04bp6870786pb40gzjlkb204a4x4a402bkljziaakg08k8x8k80gkaaiz11218k6o4o0o4o6k81211zy111w101w11

120P7 is a period-7 oscillator that produces middleweight sparks and duoplet sparks. It has been used in many higher-period oscillators, although due to its large size, there are often smaller alternatives.

The discoverer and exact date of discovery are unknown. It is not in Dean Hickerson's oscillator stamp collection, but it is in jslife, putting the discovery date between 1995 and 2012.

On October 17, 2024, Chris857 found a 101-glider synthesis which he quickly improved to 97 gliders. On October 17, 2025, KtT lowered the cost to 96 gliders.

Gallery

x = 59, y = 33, rule = B3/S23 4b5o3b5o$4bo2bobobobo2bo$4bo2bobobobo2bo$4bo3bo3bo3bo$4o3bo5bo3b4o$o6b o5bo6bo$o6bo5bo6bo$3ob3obo3bob3ob3o$o2bo3bo5bo3bo2bo$b2o15b2o2$b2o15b 2o10b3o$o2bo3bo5bo3bo2bo9bo2b2o7b5o3b5o$3ob3obo3bob3ob3o9b2o2bo7bo2bob obobo2bo$o6bo5bo6bo11b3o7bo2bobobobo2bo$o6bo5bo6bo21bo3bo3bo3bo$4o3bo 5bo3b4o17b4o3bo5bo3b4o$4bo3bo3bo3bo21bo6bo5bo6bo$4bo2bobobobo2bo7b3o 11bo6bo5bo6bo$4bo2bobobobo2bo7bo2b2o9b3ob3obo3bob3ob3o$4b5o3b5o7b2o2bo 9bo2bo3bo5bo3bo2bo$26b3o10b2o15b2o2$39b2o15b2o$38bo2bo3bo5bo3bo2bo$38b 3ob3obo3bob3ob3o$38bo6bo5bo6bo$38bo6bo5bo6bo$38b4o3bo5bo3b4o$42bo3bo3b o3bo$42bo2bobobobo2bo$42bo2bobobobo2bo$42b5o3b5o! #C [[ THUMBSIZE 2 THEME 6 GRID GRIDMAJOR 0 SUPPRESS THUMBLAUNCH ]] #C [[ GPS 8 THUMBSIZE 2 STARTFROM 7 ]]

Like Kok's galaxy, 120P7 can interact in ways other than its obvious middleweight and duoplet sparks. (click above to open LifeViewer) RLE: here Plaintext: here Catagolue: here

x = 26, y = 26, rule = B3/S23 5b2o2bobo2b2o$5bobobobobobo$4bo2bobobobo2bo$5b2obo3bob2o$2bo3bo7bo3bo$ 2obo13bob2o$o2b2o2bo5bo2b2o2bo$b2o3bobo3bobo3b2o$3bo3bo5bo3bo$3o15b3o 2$3o15b3o$3bo3bo5bo3bo$b2o3bobo3bobo3b2o$o2b2o2bo5bo2b2o2bo$2obo13bob 2o$2bo3bo7bo3bo4b3o$5b2obo3bob2o7b3o$4bo2bobobobo2bo$5bobobobobobo$5b 2o2bobo2b2o3$5bo$5bo$5bo! #C [[ THUMBSIZE 2 THEME 6 GRID GRIDMAJOR 0 SUPPRESS THUMBLAUNCH ]] #C [[ GPS 4 THUMBSIZE 2 ]]

120P7 can hassle a blinker or beehive in specific positions. (click above to open LifeViewer) Catagolue: here

See also

• Period-7 sparkers

External links

• 120P7 at Adam P. Goucher's Catagolue