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A267582
Number of ON (black) cells in the n-th iteration of the "Rule 167" elementary cellular automaton starting with a single ON (black) cell.
1
1, 2, 3, 5, 5, 9, 9, 11, 9, 17, 17, 19, 17, 23, 21, 23, 17, 33, 33, 35, 33, 39, 37, 39, 33, 47, 45, 47, 41, 51, 45, 47, 33, 65, 65, 67, 65, 71, 69, 71, 65, 79, 77, 79, 73, 83, 77, 79, 65, 95, 93, 95, 89, 99, 93, 95, 81, 107, 101, 103, 89, 107, 93, 95, 65
OFFSET
0,2
REFERENCES
S. Wolfram, A New Kind of Science, Wolfram Media, 2002; p. 55.
MATHEMATICA
rule=167; 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[Total[catri[[k]]], {k, 1, rows}] (* Number of Black cells in stage n *)
CROSSREFS
Cf. A267576.
Sequence in context: A128188 A318636 A366975 * A360072 A139127 A239143
KEYWORD
nonn,easy
AUTHOR
Robert Price, Jan 17 2016
STATUS
approved