Sidewalk

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Sidewalk
x = 6, y = 5, rule = B3/S23 b2ob2o$2bobo$bo2bo$bobo$2ob2o! #C [[ THUMBSIZE 2 THEME 6 GRID GRIDMAJOR 0 SUPPRESS THUMBLAUNCH ]] #C Still life
Pattern type Strict still life
Number of cells 14
Bounding box 6×5
Frequency class 23.6
Discovered by Unknown
Year of discovery Unknown

Sidewalk (or pavement) is a 14-cell still life made up of two islands that are by themselves referred to as sides. An individual side can occasionally be useful as an induction coil.

Peter Raynham found a 4-glider synthesis for the still life in 1973, which is based on a head-to-head collision between two pi-heptominoes.[1]

A side
x = 7, y = 4, rule = B3/S23 5b2o$2o2b2o$b2o2b2o$2o! #C [[ THUMBSIZE 2 THEME 6 GRID GRIDMAJOR 0 SUPPRESS THUMBLAUNCH ]] #C [[ AUTOSTART THUMBSIZE 4 HEIGHT 480 ZOOM 64 GPS 1 PAUSE 4 T 2 PAUSE 4 LOOP 3 ]]
A sidewalk predecessor.
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RLE: here Plaintext: here

See also

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