Buckingham's p13

Buckingham's p13
x = 25, y = 15, rule = B3/S23 4bo15bo$3bobo13bobo$3bobo13bobo$b3ob2o11b2ob3o$o23bo$b3ob2o11b2ob3o$3b ob2o11b2obo$10bo3bo$11bobo$10b2ob2o$8bo2bobo2bo$7bobobobobobo$7b2o2bob o2b2o$11bobo$12bo! #C [[ THUMBSIZE 2 THEME 6 GRID GRIDMAJOR 0 SUPPRESS THUMBLAUNCH ]] #C [[ AUTOSTART ]] #C [[ HEIGHT 460 WIDTH 680 THUMBSIZE 3 ZOOM 24 GPS 4 ]]
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Pattern type	Oscillator
Number of cells	65
Bounding box	25 × 15
Period	13
Mod	13
Heat	10.2
Volatility	0.50
Strict volatility	0.50
Discovered by	David Buckingham
Year of discovery	1976
Rules Outer-totalistic rules B3/S23 – B38/S2378 # of rules 23 = 8 Isotropic rules B3-cey/S2-n3-cy – B34eqz5n6c7c8/S234cekqrty5-qr6-k78
Glider synthesis Fewest gliders 25† Catagolue-generated RLE synthesis Uploaded synthesis RLE 65p13.1_synth.rle †Can be constructed with 15 gliders using the reverse caber tosser universal constructor.
Pattern files Plaintext 65p13.1.cells RLE 65p13.1.rle
Identifiers apgcode xp13_g88e1e8z0113033xokczy4araaaa4z0ggo0oox356z122ege2 Pentadecathlon ID 65P13.1

Buckingham's p13 is a period-13 oscillator. It was the first period-13 oscillator to be found, and was discovered by David Buckingham on July 31, 1976. It features two eater 2s used to stabilize another object between them (which is a predecessor of 2 loaves and a bi-boat).

In August 2013, Martin Grant found a 116-glider synthesis for a variant of this oscillator using different eater 2s, and Mark Niemiec made a 113-glider synthesis for the canonical form shown in infobox. Later, goldenratio found a 37-glider synthesis of this oscillator on July 30, 2020. iNoMed reduced this to 32 gliders on April 5, 2021.

x = 14, y = 18, rule = B3/S23 4b2o$4b2o2b2o$9bo$9bob2o$3bo4b2obo$2bobobo6bo$3bo2b8o$3o$o6bo3bo$7bo2b obo$11b2o$3bobo$b3ob2o$o$b3ob2o$3bobo$3bobo$4bo! #C [[ THUMBSIZE 2 THEME 6 GRID GRIDMAJOR 0 SUPPRESS THUMBLAUNCH ]] #C [[ THUMBSIZE 2 ZOOM 16 HEIGHT 400 STARTFROM 1 AUTOSTART GPS 4 ]]

Monomer with a known 31G synthesis (click above to open LifeViewer) Catagolue: here

See also

• 134P39.1

External links

• Buckingham's p13 at Adam P. Goucher's Catagolue
• 3 Period-13 oscillators at Mark D. Niemiec's Life Page
• 65P13.1 at Heinrich Koenig's Game of Life Object Catalogs