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 A253088 Number of ON cells at generation n of 9-celled totalistic CA defined by Rule 750. 5
 1, 9, 12, 40, 24, 88, 48, 148, 80, 164, 172, 296, 236, 380, 324, 500, 436, 552, 552, 644, 688, 936, 788, 1168, 928, 1296, 1044, 1444, 1352, 1768, 1576, 2136, 1728, 2116, 1992, 2264, 2288, 2604, 2536, 3056, 2812, 3380, 3112, 3864, 3484, 4204, 3836, 4764, 4120, 4748, 4456 (list; graph; refs; listen; history; text; internal format)
 OFFSET 0,2 COMMENTS The keyword "look" refers to the illustration. LINKS Table of n, a(n) for n=0..50. N. J. A. Sloane, Illustration of generations 0-15 N. J. A. Sloane, On the Number of ON Cells in Cellular Automata, arXiv:1503.01168, 2015 Index entries for sequences related to cellular automata FORMULA It would be nice to have a recurrence. MATHEMATICA Map[Function[Apply[Plus, Flatten[#1]]], CellularAutomaton[{750, {2, {{2, 2, 2}, {2, 1, 2}, {2, 2, 2}}}, {1, 1}}, {{{1}}, 0}, 66]] ArrayPlot /@ CellularAutomaton[{750, {2, {{2, 2, 2}, {2, 1, 2}, {2, 2, 2}}}, {1, 1}}, {{{1}}, 0}, 15] CROSSREFS Cf. A169707 (5-neighbor analog). Sequence in context: A024312 A024877 A120991 * A341208 A328120 A072308 Adjacent sequences: A253085 A253086 A253087 * A253089 A253090 A253091 KEYWORD nonn,look AUTHOR N. J. A. Sloane, Feb 12 2015 STATUS approved

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Last modified October 3 11:12 EDT 2023. Contains 365861 sequences. (Running on oeis4.)