A267586 Decimal representation of the n-th iteration of the "Rule 169" elementary cellular automaton starting with a single ON (black) cell.

1, 0, 5, 7, 111, 191, 1279, 511, 31743, 61439, 376831, 458751, 7077887, 11534335, 79691775, 16777215, 2113929215, 4160749567, 25232932863, 32212254719, 472446402559, 790273982463, 5360119185407, 1649267441663, 134140418588671, 250688651132927

Offset

0,3

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=169; 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. A264442.

Sequence in context: A088270 A259496 A338525 * A224507 A065927 A217726

Adjacent sequences: A267583 A267584 A267585 * A267587 A267588 A267589

Keyword

nonn,easy

Author

Robert Price, Jan 18 2016

Status

approved