|
Search: id:A166476
|
|
|
| A166476 |
|
Number of stable n-celled patterns ("still lifes") in the 2x2 (B36/S125) cellular automaton. |
|
+0
1
|
| |
|
|
OFFSET
|
1,2
|
|
|
COMMENT
|
Counts only distinct strict still lifes; reflections and rotations are removed. Pseudo-still lifes (e.g., patterns made up of two disjoint still lifes) are not counted.
|
|
LINKS
|
LifeWiki, 2x2
|
|
EXAMPLE
|
a(3) = 1 because there is only one distinct still life with three cells: a diagonal line of length three.
|
|
CROSSREFS
|
Cf. A019473
Sequence in context: A134876 A019612 A007444 this_sequence A052950 A086851 A001054
Adjacent sequences: A166473 A166474 A166475 this_sequence A166477 A166478 A166479
|
|
KEYWORD
|
hard,more,nonn
|
|
AUTHOR
|
Nathaniel Johnston (nathaniel(AT)nathanieljohnston.com), Oct 14 2009
|
|
|
Search completed in 0.006 seconds
|
