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A170855 a(0) = 0, a(1) = 1; a(2^i + j) = a(j) + 3a(j + 1) for 0 <= j < 2^i. 0
0, 1, 3, 10, 3, 10, 33, 19, 3, 10, 33, 19, 33, 109, 90, 28, 3, 10, 33, 19, 33, 109, 90, 28, 33, 109, 90, 118, 360, 379, 174, 37, 3, 10, 33, 19, 33, 109, 90, 28, 33, 109, 90, 118, 360, 379, 174, 37, 33, 109, 90, 118, 360, 379, 174, 127, 360, 379, 444, 1198, 1497, 901, 285, 46 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,3

LINKS

Table of n, a(n) for n=0..63.

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: A167790 A010708 A072988 * A131814 A003620 A235923

Adjacent sequences:  A170852 A170853 A170854 * A170856 A170857 A170858

KEYWORD

nonn

AUTHOR

N. J. A. Sloane, Jan 02 2010

STATUS

approved

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Last modified February 20 04:39 EST 2018. Contains 299358 sequences. (Running on oeis4.)