id:A122108 - OEIS Search Results

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a(n)=number of 1's ("live" cells) at stage n of a 2-dimensional cellular automaton evolving by the rule: 1 if N+S+E+W is 1 or 2, else 0, starting from a single live cell.

+0
5

1, 4, 8, 12, 20, 24, 44, 28, 52, 56, 104, 56, 104, 112, 212, 60, 116, 120, 232, 120, 232, 240, 464, 120, 232, 240, 464, 240, 464, 480, 932, 124, 244, 248, 488, 248, 488, 496, 976, 248, 488, 496, 976, 496, 976, 992, 1952, 248, 488, 496, 976, 496, 976, 992, 1952 (list; graph; listen)

	OFFSET	`1,2`
	CROSSREFS	`Cf. A048883.` `Sequence in context: A037168 A033691 A090658 this_sequence A123723 A128233 A092108` `Adjacent sequences: A122105 A122106 A122107 this_sequence A122109 A122110 A122111`
	KEYWORD	`nonn`
	AUTHOR	`John W. Layman (layman(AT)math.vt.edu), Oct 18 2006`

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Last modified November 25 20:09 EST 2009. Contains 167514 sequences.

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