David Hilbert

David Hilbert
x = 33, y = 26, rule = B3/S23 7b2o15b2o$8bo15bo$6bo19bo$6b5o11b5o$10bo11bo$4b4o17b4o$4bo2bo17bo2bo$ 21bo$21bo$9bo4b2ob2o2bob2o$8b3o3b2obo6b2o$7bo2b2o6bo$7b3o12bo$22bobo$ 3b2o11b2o4bo2bo2b2o$3bo12b2o5b2o4bo$2obo12b2o11bob2o$ob2ob2o19b2ob2obo $5bo21bo$5bobo17bobo$6b2o17b2o$10bo11bo$6b5o11b5o$6bo19bo$8bo15bo$7b2o 15b2o! #C [[ THUMBSIZE 2 THEME 6 GRID GRIDMAJOR 0 SUPPRESS THUMBLAUNCH ]] #C [[ AUTOSTART ]] #C [[ GPS 11.5 THUMBSIZE 2 ZOOM 10 ]]
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Pattern type	Oscillator
Number of cells	122
Bounding box	33×26
Period	23
Mod	23
Heat	34.6
Volatility	0.71
Strict volatility	0.71
Discovered by	Luka Okanishi Aidan F. Pierce
Year of discovery	2019
Rules Outer-totalistic rules B3/S23 – B38/S238 Important rules Conway's Life # of rules 22 = 4 Isotropic rules B3-k/S23-cy – B34e5c7c8/S234ety5ek6ei8
Glider synthesis Fewest gliders 101 (17†) Catagolue-generated RLE davidhilbert_synth.rle †Can be constructed with 17 gliders using the reverse caber tosser universal constructor.
Pattern files Plaintext davidhilbert.cells RLE davidhilbert.rle
Identifiers apgcode xp23_y1ggy3o8bdzc82u074wo84s8x31560u28czx11y0hi21y411zy5ddx696zgg0s4y1owsi1isx4s0ggz10230f9y3ogjn45303201zyc65

David Hilbert (or 122P23) was the first period-23 oscillator to be discovered. It was found by Luka Okanishi on November 24, 2019 based on a partial result by Aidan F. Pierce. It consists of two copies of an engine, itself consisting of a B-heptomino being hassled by two unusual catalysts and a block, supported by a known period-agnostic beehive shuttle mechanism (seen in, for example, an extension of the carnival shuttle). There are several isomers known (including trans- versions and different phase offsets), with the one pictured having minimum population and bounding box.

External links

• David Hilbert at Adam P. Goucher's Catagolue