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A267586
Decimal representation of the n-th iteration of the "Rule 169" elementary cellular automaton starting with a single ON (black) cell.
1
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.
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
KEYWORD
nonn,easy
AUTHOR
Robert Price, Jan 18 2016
STATUS
approved