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A169705
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Total number of ON cells at stage n of two-dimensional cellular automaton defined by "Rule 494".
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4
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1, 5, 8, 21, 24, 37, 52, 85, 84, 97, 124, 129, 160, 217, 260, 309, 340, 297, 396, 317, 368, 461, 480, 537, 584, 557, 716, 705, 808, 997, 1112, 1245, 1256, 1105, 1332, 1209, 1320, 1353, 1452, 1401, 1468, 1545, 1628, 1641, 1776, 1905, 2052, 2209, 2160, 2037, 2392
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OFFSET
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0,2
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COMMENTS
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Initialized with a single black (ON) cell at stage zero. - Robert Price, May 02 2016
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REFERENCES
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S. Wolfram, A New Kind of Science, Wolfram Media, 2002; p. 170.
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LINKS
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Robert Price, Table of n, a(n) for n = 0..128
Robert Price, Diagrams of the first 20 stages
N. H. Packard and S. Wolfram, Two-Dimensional Cellular Automata, Journal of Statistical Physics, 38 (1985), 901-946.
N. J. A. Sloane, On the Number of ON Cells in Cellular Automata, arXiv:1503.01168 [math.CO], 2015
Eric Weisstein's World of Mathematics, Elementary Cellular Automaton
S. Wolfram, A New Kind of Science
Index entries for sequences related to cellular automata
Index to 2D 5-Neighbor Cellular Automata
Index to Elementary Cellular Automata
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MATHEMATICA
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Map[Function[Apply[Plus, Flatten[ #1]]], CellularAutomaton[{ 494, {2, {{0, 2, 0}, {2, 1, 2}, {0, 2, 0}}}, {1, 1}}, {{{1}}, 0}, 100]]
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CROSSREFS
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Cf. A169706.
Sequence in context: A271156 A272115 A268195 * A138810 A331700 A105634
Adjacent sequences: A169702 A169703 A169704 * A169706 A169707 A169708
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KEYWORD
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nonn
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AUTHOR
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N. J. A. Sloane, Apr 17 2010
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STATUS
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approved
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