90P51

90P51
x = 25, y = 20, rule = B3/S23 11b2o5bo$11bo4b2obo$6bob2obo2b2o3bo$6b2obob2o3bo2bob2o$9bo5bo2b2obo2bo $o8b2ob2o3bo5b2o$3o10bobob2o$3bo5b2obo2b2o3bo$2bo6b2obobo3b3o$3bo9bo2b 2o$6b2o6b2o2bo$6b2o9b2o2$7b2o$7b2o$11bo$4b2o6bo$5bo5bo$2b3o7b3o$2bo11b o! #C [[ THUMBSIZE 2 THEME 6 GRID GRIDMAJOR 0 SUPPRESS THUMBLAUNCH ]] #C [[ AUTOSTART ]] #C [[ THUMBSIZE 3 GPS 4 ZOOM 22 HEIGHT 600 WIDTH 600 ]]
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Pattern type	Oscillator
Number of cells	90
Bounding box	25 × 20
Period	51 (mod: 51)
Heat	28.16
Volatility	0.57 | 0.01
Kinetic symmetry	n
Discovered by	Matthias Merzenich Adam P. Goucher
Year of discovery	2014
Rules Outer-totalistic rules B3/S23 – B38/S238 # of rules 22 = 4 Isotropic rules B3/S23 – B34e5cy6a8/S234cei5ek6-ac8
Pattern files Plaintext 90p51.cells RLE 90p51.rle
Identifiers apgcode xp51_g08o0u15gis89f0s48cz11wdbaik68jd0ddy1ca23zy232011y1sr7zy6o8a6y16a8o

90P51 is a period-51 oscillator, and was the smallest known of its period until the discovery of the capped p51 gun in November 2022. It consists of a honey thieves variant interacting with an unnamed period 3 oscillator. The p3 eater 2 variant was originally found by Noam Elkies on July 24, 2000 and used to construct 134P39.1, while Adam P. Goucher and Matthias Merzenich discovered in September 2014 that it could be combined with honey thieves to produce a p51 oscillator. The p3 portion of this oscillator was later reduced by two cells in July 2021, with one-cell reductions each by James Pascua and Matthias Merzenich.

See also

• 72P68
• 74P85

External links

• 90P51 at Adam P. Goucher's Catagolue