Cap and dock

Cap and dock
x = 7, y = 6, rule = B3/S23 5b2o$b2obobo$obobo$obobo$b2obobo$5b2o! #C [[ THUMBSIZE 2 THEME 6 GRID GRIDMAJOR 0 SUPPRESS THUMBLAUNCH ]] #C [[ THUMBSIZE 3 ZOOM 21 HEIGHT 400 SUPPRESS ]] #C [[ THUMBSIZE 2 HEIGHT 480 ]]
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Pattern type	Strict still life
Number of cells	18
Bounding box	7 × 6
Frequency class	26.2
Static symmetry	Unspecified
Discovered by	Unknown
Year of discovery	Unknown
Rules Outer-totalistic rules B/S23 – B3678/S012345678 # of rules 211 = 2048 Isotropic rules B/S2-cn3nr – B2ikn34-in5-q6-ik78/S012345678
Glider synthesis Fewest gliders 5 Catagolue-generated RLE synthesis
Pattern files Plaintext capanddock.cells RLE capanddock.rle
Identifiers apgcode xs18_j1u0uicz11 Pentadecathlon ID 18.2652

Cap and dock is an 18-bit still life composed of a cap and a dock.

Commonness

Cap and dock is the 14th most common 18-cell still life. Of the thirteen ranked above it, all but two use induction coils.

Occurrence

5bo2$4b3o$3b3o$3bo$b2obo$2b2o$3bo2$b2o$o2bo$bobo$2bo! #C [[ THUMBSIZE 2 THEME 6 GRID GRIDMAJOR 0 SUPPRESS THUMBLAUNCH ]] #C [[ GPS 8 THUMBSIZE 2 ]] An example active region (there are many) turning a loaf into a dock while becoming a cap. If the rightmost cell of the active region is deleted before running, it forms the more common dock and long bookend instead. (click above to open LifeViewer)

Glider synthesis

All strict still lifes with a population of 22 or fewer cells, all oscillators with 16 or fewer cells, and all spaceships with 31 or fewer cells are known to be glider-constructible. A glider synthesis of this object can be found in the infobox to the right.

External links

• Cap and dock at Adam P. Goucher's Catagolue