Aircraft carrier

Aircraft carrier
x = 4, y = 3, rule = B3/S23 2b2o$o2bo$2o! #C [[ THUMBSIZE 2 THEME 6 GRID GRIDMAJOR 0 SUPPRESS THUMBLAUNCH ]] #C Still life
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Pattern type	Strict still life
Number of cells	6
Bounding box	4×3
Frequency class	12.0
Discovered by	John Conway
Year of discovery	1970
Rules Outer-totalistic rules B/S2 – B35678/S012345678 Important rules Conway Life, HighLife # of rules 213 = 8192 Isotropic rules B/S2ae – B2-ak34-q5678/S012345678
Glider synthesis Fewest gliders 4 Catagolue-generated RLE aircraftcarrier_synth.rle Uploaded synthesis RLE aircraftcarrier_synth.rle
Pattern files Plaintext aircraftcarrier.cells RLE aircraftcarrier.rle
Identifiers apgcode xs6_39c Pentadecathlon ID 6.3

Aircraft carrier (or simply carrier) is a 6-cell still life, and the smallest still life that has more than one island. It consists of two pre-blocks.

Commonness

Aircraft carrier is the fifteenth most common still life in Achim Flammenkamp's census, being less common than long barge but more common than paperclip.

Aircraft carrier is the fifteenth most common still life on Adam P. Goucher's Catagolue, being less common than long barge but more common than paperclip. Among all still lifes with 6 cells, it is the fourth most common, being less common than barge but more common than snake. It is also the twentieth most common object overall on Catagolue.

Glider synthesis

There are three 3-glider collisions that produce an aircraft carrier as well as another object. The first one leaves a stray block, the second a beehive and the third a blinker, leading to three two-stage 4-glider syntheses for the still life. Other 4-glider collisions that make a clean aircraft carrier are also known.

See also

• Carrier siamese carrier
• Broken snake
• Snake

External links

• Aircraft carrier at the Life Lexicon

• Carrier at Adam P. Goucher's Catagolue

• The 5 six-bit still-lifes at Mark D. Niemiec's Life Page