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A170871 a(0) = 1, a(1) = 2; a(2^i + j) = 2a(j) + 3a(j + 1) for 0 <= j < 2^i. 0
1, 2, 8, 28, 8, 28, 100, 80, 8, 28, 100, 80, 100, 356, 440, 184, 8, 28, 100, 80, 100, 356, 440, 184, 100, 356, 440, 460, 1268, 2032, 1432, 392, 8, 28, 100, 80, 100, 356, 440, 184, 100, 356, 440, 460, 1268, 2032, 1432, 392, 100, 356, 440, 460, 1268, 2032, 1432, 668, 1268 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,2

LINKS

Table of n, a(n) for n=0..56.

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: A287204 A299640 A197932 * A245996 A229935 A082107

Adjacent sequences:  A170868 A170869 A170870 * A170872 A170873 A170874

KEYWORD

nonn

AUTHOR

N. J. A. Sloane, Jan 02 2010

STATUS

approved

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Last modified October 16 17:10 EDT 2018. Contains 316271 sequences. (Running on oeis4.)