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A170850 G.f.: Prod_{k >= 0} (1 + 3x^(2^k-1) + 3x^(2^k)). 0
4, 15, 21, 21, 57, 108, 90, 39, 57, 108, 126, 234, 495, 594, 351, 93, 57, 108, 126, 234, 495, 594, 387, 288, 495, 702, 1080, 2187, 3267, 2835, 1296, 255, 57, 108, 126, 234, 495, 594, 387, 288, 495, 702, 1080, 2187, 3267, 2835, 1332, 450, 495, 702, 1080, 2187, 3267, 2943 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,1

LINKS

Table of n, a(n) for n=0..53.

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: A225562 A301707 A100783 * A297711 A055465 A209870

Adjacent sequences:  A170847 A170848 A170849 * A170851 A170852 A170853

KEYWORD

nonn

AUTHOR

N. J. A. Sloane, Jan 02 2010

STATUS

approved

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Last modified October 18 07:00 EDT 2018. Contains 316307 sequences. (Running on oeis4.)