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A170866 a(0) = 1, a(1) = 1; a(2^i + j) = 2a(j) + 3a(j + 1) for 0 <= j < 2^i. 0
1, 1, 5, 17, 5, 17, 61, 49, 5, 17, 61, 49, 61, 217, 269, 113, 5, 17, 61, 49, 61, 217, 269, 113, 61, 217, 269, 281, 773, 1241, 877, 241, 5, 17, 61, 49, 61, 217, 269, 113, 61, 217, 269, 281, 773, 1241, 877, 241, 61, 217, 269, 281, 773, 1241, 877, 409, 773, 1241, 1381, 2881, 5269 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,3

LINKS

Table of n, a(n) for n=0..60.

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: A277534 A090592 A093558 * A125636 A156323 A286816

Adjacent sequences:  A170863 A170864 A170865 * A170867 A170868 A170869

KEYWORD

nonn

AUTHOR

N. J. A. Sloane, Jan 02 2010

STATUS

approved

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Last modified October 18 14:29 EDT 2018. Contains 316321 sequences. (Running on oeis4.)