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A160239 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. 1
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; refs; listen; history; internal format)
OFFSET

0,2

COMMENTS

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: A195862 A205382 A109049 * A037018 A003873 A077110

Adjacent sequences:  A160236 A160237 A160238 * A160240 A160241 A160242

KEYWORD

nonn

AUTHOR

John W. Layman (layman(AT)math.vt.edu), May 05 2009

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Last modified February 15 06:58 EST 2012. Contains 205694 sequences.