Stillater

Stillater
3bo4b$2bobob2o$2bob2obo$2o6b$bobob2ob$bobo2bob$2bo2bo2b$3b2o! #C [[ THUMBSIZE 2 THEME 6 GRID GRIDMAJOR 0 SUPPRESS THUMBLAUNCH ]] #C [[ AUTOSTART ]] #C [[ THUMBSIZE 2 GPS 2 ]]
View animated image
View static image
Pattern type	Oscillator
Oscillator type	Muttering moat
	Billiard table
Number of cells	22
Bounding box	8 × 8
Period	3 (mod: 3)
Heat	2
Volatility	0.13 | 0.13
Kinetic symmetry	n
Rotor type	Stillater
Discovered by	Robert Wainwright
Year of discovery	1985
Rules Outer-totalistic rules B3/S23 – B378/S0235678 # of rules 27 = 128 Isotropic rules B3ery/S2-i3-aij – B2in34cenqt5acikq6-ik78/S01c234-ty5678
Glider synthesis Fewest gliders (canonical) 47† Catagolue-generated RLE (canonical) synthesis Fewest gliders (cheapest variant) 10 Catagolue-generated RLE (cheapest variant) synthesis †Can be constructed with 15 gliders using the reverse caber tosser universal constructor.
Pattern files Plaintext stillater.cells RLE stillater.rle
Identifiers apgcode (canonical) xp3_0ca1d2sgz321343 apgcode (cheapest variant) xp3_8kiq3k4ozx6221 Pentadecathlon ID 22P3.81

Stillater is a period-3 oscillator that was found by Robert Wainwright in September 1985. It is one of only three essentially different period 3 oscillators with only three cells in the rotor. The others are 1-2-3 and cuphook.

Gallery

x = 13, y = 7, rule = B3/S23 5bob2o4b$3b3obobo3b$obo6bo3b$2ob2ob2obob2o$3bobo4bobo$3bobob3o3b$4b2ob o! #C [[ THUMBSIZE 2 THEME 6 GRID GRIDMAJOR 0 SUPPRESS THUMBLAUNCH ]] #C [[ THUMBSIZE 2 GPS 2 AUTOSTART ]] Cousins is a period-3 oscillator that contains two copies of the stillater rotor (click above to open LifeViewer) RLE: here Plaintext: here Catagolue: here

x = 8, y = 8, rule = B3/S23 3bo$2bobo$bo2bo$bob2ob2o$2o4bo$2bobobo$2bo2bo$3b2o! #C [[ THUMBSIZE 2 THEME 6 GRID GRIDMAJOR 0 SUPPRESS THUMBLAUNCH ]] #C [[ THUMBSIZE 2 GPS 2 AUTOSTART ]] A 20-cell variant. This is the smallest period-3 oscillator where no cell is on for exactly one generation. (click above to open LifeViewer) Catagolue: here

External links

• Stillater at the Life Lexicon
• Stillater at Adam P. Goucher's Catagolue
• 22P3.81 at Heinrich Koenig's Game of Life Object Catalogs
• Cousins at the Life Lexicon
• Cousins at Adam P. Goucher's Catagolue