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A170858 a(0) = 1, a(1) = 0; a(2^i + j) = 3a(j) + a(j + 1) for 0 <= j < 2^i. 0
1, 0, 3, 3, 3, 3, 12, 12, 3, 3, 12, 12, 12, 21, 48, 39, 3, 3, 12, 12, 12, 21, 48, 39, 12, 21, 48, 48, 57, 111, 183, 120, 3, 3, 12, 12, 12, 21, 48, 39, 12, 21, 48, 48, 57, 111, 183, 120, 12, 21, 48, 48, 57, 111, 183, 129, 57, 111, 192, 201, 282, 516, 669, 363, 3, 3, 12, 12, 12, 21 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,3

LINKS

Table of n, a(n) for n=0..69.

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: A087575 A001270 A029630 * A024725 A269562 A214730

Adjacent sequences:  A170855 A170856 A170857 * A170859 A170860 A170861

KEYWORD

nonn

AUTHOR

N. J. A. Sloane, Jan 02 2010

STATUS

approved

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Last modified February 23 09:58 EST 2018. Contains 299536 sequences. (Running on oeis4.)