Shillelagh

Shillelagh
x = 5, y = 3, rule = B3/S23 2o$o2b2o$b2obo! #C [[ THUMBSIZE 2 THEME 6 GRID GRIDMAJOR 0 SUPPRESS THUMBLAUNCH ]] #C [[ THUMBSIZE 3 ZOOM 21 HEIGHT 400 SUPPRESS ]]
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Pattern type	Strict still life
Number of cells	8
Bounding box	5 × 3
Frequency class	13.7
Static symmetry	Unspecified
Discovered by	Charles Corderman Hugh Thompson
Year of discovery	1971
Rules Outer-totalistic rules B/S23 – B3678/S012345678 # of rules 211 = 2048 Isotropic rules B/S2aek3n – B2in34-kr5-q678/S012345678
Glider synthesis Fewest gliders 4 Catagolue-generated RLE synthesis Uploaded synthesis RLE shillelagh_synth.rle
Pattern files Plaintext shillelagh.cells RLE shillelagh.rle
Identifiers apgcode xs8_3pm Pentadecathlon ID 8.2

Shillelagh is an 8-cell still life discovered by Charles Corderman and Hugh Thompson in 1971.

This still life is comprised of the normally unstable pre-block with a normally unstable long tail attached. It resembles an intermediate between the snake and the long integral.

Commonness

Shillelagh is the eighteenth most common still life in Achim Flammenkamp's census, being less common than long ship but more common than integral sign. It is also the twenty-sixth most common object on Adam P. Goucher's Catagolue.

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.

See also

• Long shillelagh

External links

• Shillelagh at the Life Lexicon

• Shillelagh at Adam P. Goucher's Catagolue

• The 9 eight-bit still-lifes at Mark D. Niemiec's Life Page