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A170868 a(0) = 1, a(1) = 2; a(2^i + j) = 3a(j) + a(j + 1) for 0 <= j < 2^i. 0
1, 2, 5, 11, 5, 11, 26, 38, 5, 11, 26, 38, 26, 59, 116, 119, 5, 11, 26, 38, 26, 59, 116, 119, 26, 59, 116, 140, 137, 293, 467, 362, 5, 11, 26, 38, 26, 59, 116, 119, 26, 59, 116, 140, 137, 293, 467, 362, 26, 59, 116, 140, 137, 293, 467, 383, 137, 293, 488, 557, 704, 1346, 1763 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,2

LINKS

Table of n, a(n) for n=0..62.

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: A246208 A286091 A127011 * A276736 A069162 A300677

Adjacent sequences:  A170865 A170866 A170867 * A170869 A170870 A170871

KEYWORD

nonn

AUTHOR

N. J. A. Sloane, Jan 02 2010

STATUS

approved

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Last modified October 15 19:24 EDT 2018. Contains 316237 sequences. (Running on oeis4.)