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A170862 a(0) = 1, a(1) = 0; a(2^i + j) = 3a(j) + 3a(j + 1) for 0 <= j < 2^i. 0
1, 0, 3, 9, 3, 9, 36, 36, 3, 9, 36, 36, 36, 135, 216, 117, 3, 9, 36, 36, 36, 135, 216, 117, 36, 135, 216, 216, 513, 1053, 999, 360, 3, 9, 36, 36, 36, 135, 216, 117, 36, 135, 216, 216, 513, 1053, 999, 360, 36, 135, 216, 216, 513, 1053, 999, 459, 513, 1053, 1296, 2187, 4698, 6156 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,3

LINKS

Table of n, a(n) for n=0..61.

David Applegate, Omar E. Pol and N. J. A. Sloane, The Toothpick Sequence and Other Sequences from Cellular Automata

N. J. A. Sloane, Catalog of Toothpick and Cellular Automata Sequences in the OEIS

CROSSREFS

Sequence in context: A010707 A097665 A284564 * A083996 A010259 A255583

Adjacent sequences:  A170859 A170860 A170861 * A170863 A170864 A170865

KEYWORD

nonn

AUTHOR

N. J. A. Sloane, Jan 02 2010

STATUS

approved

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Last modified February 25 06:31 EST 2018. Contains 299643 sequences. (Running on oeis4.)