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A267357 Decimal representation of the n-th iteration of the "Rule 124" elementary cellular automaton starting with a single ON (black) cell. 2
1, 3, 7, 11, 31, 35, 103, 235, 383, 899, 1415, 3979, 4511, 13219, 30183, 48747, 116479, 184067, 512775, 587531, 1653535, 3890979, 6284135, 14706667, 23128191, 65108099, 73636231, 216382347, 493870495, 804319139, 1882288615, 2960372331, 8333424383, 9428680451 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,2

REFERENCES

S. Wolfram, A New Kind of Science, Wolfram Media, 2002; p. 55.

LINKS

Robert Price, Table of n, a(n) for n = 0..1000

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 Elementary Cellular Automata

MATHEMATICA

rule=124; rows=20; ca=CellularAutomaton[rule, {{1}, 0}, rows-1, {All, All}]; (* Start with single black cell *) catri=Table[Take[ca[[k]], {rows-k+1, rows+k-1}], {k, 1, rows}]; (* Truncated list of each row *) Table[FromDigits[catri[[k]], 2], {k, 1, rows}]   (* Decimal Representation of Rows *)

CROSSREFS

Cf. A267355.

Sequence in context: A238673 A318263 A213740 * A152084 A274134 A131588

Adjacent sequences:  A267354 A267355 A267356 * A267358 A267359 A267360

KEYWORD

nonn,easy

AUTHOR

Robert Price, Jan 13 2016

STATUS

approved

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Last modified February 15 16:25 EST 2019. Contains 320136 sequences. (Running on oeis4.)