id:A160239 - OEIS Search Results

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Number of "ON" cells in a 2-dimensional cellular automaton evolving acording to the rule that a cell is ON in a given generation if and only if there was an odd number of ON cells among the eight nearest neighbors in the preceding generation, starting with one ON cell.

+0
2

1, 8, 8, 24, 8, 64, 24, 112, 8, 64, 64, 192, 24, 192, 112, 416, 8, 64, 64, 192, 64, 512, 192, 896, 24, 192, 192, 576, 112, 896, 416, 1728, 8, 64, 64, 192, 64, 512, 192, 896, 64, 512, 512, 1536, 192, 1536, 896, 3328, 24, 192, 192, 576, 192, 1536, 576, 2688, 112, 896 (list; graph; listen)

	OFFSET	`0,2`
	COMMENT	`It appears that a(2^k)=8 for k=0,1,2,3,... .`
	LINKS	`Index entries for sequences related to cellular automata`
	CROSSREFS	`A122108, A147562` `Sequence in context: A006784 A061156 A109049 this_sequence A037018 A003873 A077110` `Adjacent sequences: A160236 A160237 A160238 this_sequence A160240 A160241 A160242`
	KEYWORD	`nonn`
	AUTHOR	`John W. Layman (layman(AT)math.vt.edu), May 05 2009`

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Last modified December 13 23:45 EST 2009. Contains 170824 sequences.

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