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A151551 G.f.: (1 + 3x) * Prod_{ n >= 1} (1 + x^(2^n-1) + 2*x^(2^n)). 5
1, 4, 5, 7, 6, 13, 16, 13, 6, 13, 17, 20, 25, 42, 44, 25, 6, 13, 17, 20, 25, 42, 45, 32, 25, 43, 54, 65, 92, 128, 112, 49, 6, 13, 17, 20, 25, 42, 45, 32, 25, 43, 54, 65, 92, 128, 113, 56, 25, 43, 54, 65, 92, 129, 122, 89, 93, 140, 173, 222, 312, 368, 272, 97, 6, 13, 17, 20, 25, 42 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,2

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

Cf. A139250, A151550, A151552.

Sequence in context: A104140 A003563 A023833 * A021690 A109896 A004221

Adjacent sequences:  A151548 A151549 A151550 * A151552 A151553 A151554

KEYWORD

nonn

AUTHOR

N. J. A. Sloane, May 19 2009

STATUS

approved

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Last modified July 25 15:34 EDT 2017. Contains 289795 sequences.