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A169705 Total number of ON cells at stage n of two-dimensional cellular automaton defined by "Rule 494". 4
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 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,2

COMMENTS

Initialized with a single black (ON) cell at stage zero. - Robert Price, May 02 2016

REFERENCES

S. Wolfram, A New Kind of Science, Wolfram Media, 2002; p. 170.

LINKS

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

MATHEMATICA

Map[Function[Apply[Plus, Flatten[ #1]]], CellularAutomaton[{ 494, {2, {{0, 2, 0}, {2, 1, 2}, {0, 2, 0}}}, {1, 1}}, {{{1}}, 0}, 100]]

CROSSREFS

Cf. A169706.

Sequence in context: A271156 A272115 A268195 * A138810 A331700 A105634

Adjacent sequences:  A169702 A169703 A169704 * A169706 A169707 A169708

KEYWORD

nonn

AUTHOR

N. J. A. Sloane, Apr 17 2010

STATUS

approved

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Last modified January 28 06:00 EST 2021. Contains 340490 sequences. (Running on oeis4.)