Gabriel's p138

Gabriel's p138
x = 21, y = 21, rule = b3/s23 8b3o10b$7bo2bo10b$7bo2bo10b$7b2o12b4$17b3ob$17bo2bo$20bo$3o15b3o$o20b$ o2bo17b$b3o17b4$12b2o7b$10bo2bo7b$10bo2bo7b$10b3o! #C [[ THUMBSIZE 2 THEME 6 GRID GRIDMAJOR 0 SUPPRESS THUMBLAUNCH ]] #C [[ AUTOSTART ]] #C [[ LOOP 138 GPS 23 THUMBSIZE 3 ZOOM 16 WIDTH 640 HEIGHT 640 ]]
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Pattern type	Oscillator
Number of cells	36
Bounding box	33×33
Period	138
Mod	69
Heat	57.7
Volatility	1.00
Strict volatility	0.87
Discovered by	Gabriel Nivasch
Year of discovery	2002
Rules Outer-totalistic rules B3/S23 – B38/S23 Important rules Conway Life # of rules 21 = 2 Isotropic rules B3/S23 – B36n8/S236i7e
Glider synthesis Fewest gliders 12 Catagolue-generated RLE gabrielsp138_synth.rle Uploaded synthesis RLE gabrielsp138_synth.rle
Pattern files Plaintext gabrielsp138.cells RLE gabrielsp138.rle
Identifiers apgcode xp138_w8gw259r84z79431y1go4iszx42rik8w12 Pentadecathlon ID 36P136.1

Gabriel's p138 is a period 138 oscillator discovered by Gabriel Nivasch on October 13, 2002. In terms of its 36 cells, it is, by far, the smallest known period 138 oscillator. Within a month of its discovery, Jason Summers found a 12-glider synthesis for this oscillator.

A variant of Gabriel's p138 with blocks.
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See also

• Achim's p16

External links

• Gabriel's p138 at the Life Lexicon

• Gabriel's p138 at Adam P. Goucher's Catagolue

• Gabriel's p138 on blocks at Adam P. Goucher's Catagolue

• 36P136.1 at Heinrich Koenig's Game of Life Object Catalogs (note: site incorrectly lists period as 136 instead of 138)