Mold on fumarole

	Mold on fumarole
	<html><div class="rle"><div class="codebox"><div style="display:none;"><code></html>x = 9, y = 14, rule = B3/S23 3b2o$2bo2bo$bobobo$bo2bo$o$bobo2$4b2o$2bo4bo$2bo4bo$2bo4bo$3bo2bo$bobo 2bobo$b2o4b2o! #C [[ THUMBSIZE 2 THEME 6 GRID GRIDMAJOR 0 SUPPRESS THUMBLAUNCH ]] #C [[ AUTOSTART ]] <nowiki>#C [[ GPS 5 ZOOM 16 LOOP 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>x = 9, y = 14, rule = B3/S23 3b2o$2bo2bo$bobobo$bo2bo$o$bobo2$4b2o$2bo4bo$2bo4bo$2bo4bo$3bo2bo$bobo 2bobo$b2o4b2o! #C [[ THUMBSIZE 2 THEME 6 GRID GRIDMAJOR 0 SUPPRESS THUMBLAUNCH ]] #C [[ AUTOSTART ]] <nowiki>#C [[ GPS 5 ZOOM 16 LOOP 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
Number of cells	30
Bounding box	9×14
Period	20
Mod	20
Heat	19.9
Volatility	0.70
Strict volatility	0.02
Discovered by	Unknown
Year of discovery	Unknown
Rules
Outer-totalistic rules	B3/S23 – B3678/S2378
Important rules	Conway Life
# of rules	25 = 32
Isotropic rules	B3-kry/S23-eiky – B34ceiqtwz5aeiry678/S234-anqr5cekry6-ac78
Glider synthesis
Fewest gliders	12
Catagolue-generated RLE	moldonfumarole_synth.rle
Uploaded synthesis RLE	moldonfumarole_synth.rle
Pattern files
Plaintext	moldonfumarole.cells
RLE	moldonfumarole.rle
Identifiers
apgcode	xp20_35426ow37bkicz65123
Pentadecathlon ID	30P20.1

Mold on fumarole is a period-20 oscillator composed of a mold and a fumarole. In terms of its 30 cells, it is the smallest known period 20 oscillator.[1]

Despite being composed of two oscillators of smaller period (4 and 5 respectively), it is considered non-trivial because it has a single cell that is alive in generation 1 and is dead in its other 19 phases.

Image gallery

Generation 1 reveals the single cell with period 20 (in green)

gollark: Why would I be at "aldi" in the next 86000 seconds?

gollark: ↑

gollark: It was Christmas 110 seconds ago.

gollark: It is not Christmas.

gollark: But ignoring that.

References

Jason Summers' all-osc pattern collection. Retrieved on April 17, 2009.

External links

Mold on fumarole at Adam P. Goucher's Catagolue

30P20.1 at Heinrich Koenig's Game of Life Object Catalogs

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[1] Jason Summers' all-osc pattern collection. Retrieved on April 17, 2009.