Sidewalk

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
View static image
Pattern type	Strict still life
Number of cells	14
Bounding box	6×5
Frequency class	23.6
Discovered by	Unknown
Year of discovery	Unknown
Rules Outer-totalistic rules B/S23 – B3678/S012345678 Important rules Conway Life, HighLife # of rules 211 = 2048 Isotropic rules B/S2aek3nr – B2-ac34-aikr5-r678/S012345678
Glider synthesis Fewest gliders 4 Catagolue-generated RLE sidewalk_synth.rle Uploaded synthesis RLE sidewalk_synth.rle
Pattern files Plaintext sidewalk.cells RLE sidewalk.rle
Identifiers apgcode xs14_1no3tg Niemiec ID 14.507 Pentadecathlon ID 14.43

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.

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. (click above to open LifeViewer) RLE: here Plaintext: here

See also

• Eater 1
• Eleven loop
• Mango
• Cthulhu

External links

• Sidewalk at the Life Lexicon

• Side at the Life Lexicon

• Sidewalk at Adam P. Goucher's Catagolue
• The 619 fourteen-bit still-lifes at Mark D. Niemiec's Life Page