54P23

54P23
x = 20, y = 20, rule = B3/S23 4bo$4b3o5bo$7bo4bo$6b2o4bo2$18b2o$2b2o14bo$2bo13bobo$4bo11b2o$3b2o6bo $2bo6b3o$bob2o4bobo$o2bobo5bo$2o2bo2$15b2o$8b2o5bobo$9bo7bo$6b3o8b2o$ 6bo! #C [[ THUMBSIZE 2 THEME 6 GRID GRIDMAJOR 0 SUPPRESS THUMBLAUNCH ]] #C [[ AUTOSTART ]] #C [[ GPS 8 THUMBSIZE 3 ZOOM 15 HEIGHT 400 ]]
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Pattern type	Oscillator
Number of cells	54
Bounding box	20 × 20
Period	23 (mod: 23)
Heat	21.6
Volatility	0.74 | 0.74
Kinetic symmetry	n
Discovered by	Nora Brown Period1GliderGun
Year of discovery	2022
Rules Outer-totalistic rules B3/S23 – B38/S238 # of rules 22 = 4 Isotropic rules B3-y/S23 – B34c5ej6en8/S234cet5cek6en8
Glider synthesis Fewest gliders 25† Catagolue-generated RLE synthesis †Can be constructed with 15 gliders using the reverse caber tosser universal constructor.
Pattern files Plaintext 54p23.cells RLE 54p23.rle
Identifiers apgcode xp23_02egoy1ca23zy4sgox4acga6zgs26y01y239czy3ey06a8o

54P23 is a period-23 oscillator and honey farm hassler discovered by Nora Brown on November 6, 2022. It is the fifth unique period-23 oscillator to be discovered. With only 55 cells in its original minimum phase, it was the smallest known oscillator of its period, surpassing 70P23 which was discovered just two days earlier.

x = 20, y = 20, rule = B3/S23 4bo$4b3o4b2o$7bo3b2o$6b2o2$18b2o$2b2o14bo$2bo13bobo$4bo11b2o$3b2o6bo$ 2bo6b3o$bob2o4bobo$o2bobo5bo$2o2bo2$15b2o$8b2o5bobo$9bo7bo$6b3o8b2o$6b o! #C [[ THUMBSIZE 2 THEME 6 GRID GRIDMAJOR 0 SUPPRESS THUMBLAUNCH ]] [[ THUMBSIZE 2 GPS 8 ZOOM 20 HEIGHT 520 ]]

the original form of the oscillator, 55P23 (click above to open LifeViewer) RLE: here Plaintext: here Catagolue: here

On November 7, 2022, GUYTU6J found a 26-glider synthesis. On December 13, 2023, Chris857 lowered the cost to 25 gliders.

On March 3, 2024, Period1GliderGun reduced the population to 54 cells from the original 55, by noticing that a blinker could replace the block catalyst. The blinker is rephased with each cycle.

LCM oscillators

The LCM oscillator below is shown due to being the smallest known one by population while also satisfying the condition that at least one cell oscillates at the full period.

x = 27, y = 28, rule = B3/S23 23bo$22bobo$21bobobo$21bo3bo$13b2o4b2ob2ob2o$13bo2bobobo3bo$15b2obo3bo bo$16bobo2b2ob2o$4bo10b2o3bo2bo$4b3o4b2o4b2ob2obo$7bo3b2o6bo2bo$6b2o 13bo$22b3o$18b2o4bo$2b2o14bo$2bo13bobo$4bo11b2o$3b2o6bo$2bo6b3o$bob2o 4bobo$o2bobo5bo$2o2bo2$15b2o$8b2o5bobo$9bo7bo$6b3o8b2o$6bo! #C [[ THUMBSIZE 2 THEME 6 GRID GRIDMAJOR 0 SUPPRESS THUMBLAUNCH ]] [[ THUMBSIZE 2 HEIGHT 520 ZOOM 12 GPS 12 THEME Book STARTFROM 69 AUTOSTART ]]

103P69 with Grin reagent weld loading dock. The block catalyst cannot be replaced with a blinker here. (click above to open LifeViewer) RLE: here Plaintext: here Catagolue: here

External links

• 54P23 at Adam P. Goucher's Catagolue