29P9

	29P9
	<html><div class="rle"><div class="codebox"><div style="display:none;"><code></html> #O Dean Hickerson, April 1997 #C The smallest known period 9 oscillator x = 10, y = 10, rule = B3/S23 b2o7b$2bo7b$2bob2o4b$b2obobo3b$7bo2b$5b3o2b$2o6b2o$o2bob2obob$2b2obo2b ob$6b2o! #C [[ THUMBSIZE 2 THEME 6 GRID GRIDMAJOR 0 SUPPRESS THUMBLAUNCH ]] #C [[ AUTOSTART ]] <nowiki>#C [[ GPS 3 LOOP 9 THUMBSIZE 2 ZOOM 20 ]]</nowiki> <html></code></div></div><canvas width="200" height="300" style="margin-left:1px;"><noscript></html> <html></noscript></canvas></div></html>
	<html><div class="rle"><div class="codebox"><div style="display:none;"><code></html> #O Dean Hickerson, April 1997 #C The smallest known period 9 oscillator x = 10, y = 10, rule = B3/S23 b2o7b$2bo7b$2bob2o4b$b2obobo3b$7bo2b$5b3o2b$2o6b2o$o2bob2obob$2b2obo2b ob$6b2o! #C [[ THUMBSIZE 2 THEME 6 GRID GRIDMAJOR 0 SUPPRESS THUMBLAUNCH ]] #C [[ AUTOSTART ]] <nowiki>#C [[ GPS 3 LOOP 9 THUMBSIZE 2 ZOOM 20 ]]</nowiki> <html></code></div></div><canvas width="200" height="300" style="margin-left:1px;"><noscript></html> <html></noscript></canvas></div></html>
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Pattern type	Oscillator
Oscillator type	Billiard table
Number of cells	29
Bounding box	10×10
Period	9
Mod	9
Heat	3.3
Volatility	0.27
Strict volatility	0.27
Discovered by	Dean Hickerson
Year of discovery	1997
Rules
Outer-totalistic rules	B3/S23 – B38/S023678
Important rules	DotLife, Conway's Life
# of rules	25 = 32
Isotropic rules	B3-ae/S2-i3-ay – B2in34cej5ai6akn7c8/S01c234acenqrw5-y678
Glider synthesis
Fewest gliders	58 (32†)
Catagolue-generated RLE	29p9_synth.rle
Uploaded synthesis RLE	29p9_synth.rle
	†Can be constructed with 32 gliders using the reverse caber tosser universal constructor.
Pattern files
Plaintext	29p9.cells
RLE	29p9.rle
Identifiers
apgcode	xp9_0c93wmk46z69bo7421
Pentadecathlon ID	29P9.1

29P9 is an unnamed period-9 billiard table oscillator discovered by Dean Hickerson in April 1997. In terms of its 29 cells, it is the smallest known period 9 oscillator.[1]

Synthesis

Martin Grant found a 59-glider synthesis of 29P9 on August 6, 2016.[2]

gollark: I mean, if someone is making an ICBM, are they going to use a random commercial GPS module?

gollark: It's very bizarre. You can get around them with one of the SDR-based GPS implementations, but it's annoying for many people.

gollark: I'm immune to that due to repeated exposure, actually.

gollark: How something of this "neo dintchly".

gollark: That's literally a Discord URL. People have such ridiculous notions of "IP grabbing".

References

"Class 2 Objects Catalog". Retrieved on April 3, 2009.
Martin Grant (August 6, 2016). Re: Synthesising Oscillators (discussion thread) at the ConwayLife.com forums

External links

29P9 at Adam P. Goucher's Catagolue

29P9.1 at Heinrich Koenig's Game of Life Object Catalogs

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[1] "Class 2 Objects Catalog". Retrieved on April 3, 2009.

[post33943-2] Martin Grant (August 6, 2016). Re: Synthesising Oscillators (discussion thread) at the ConwayLife.com forums