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A170864 a(0) = 1, a(1) = 1; a(2^i + j) = 3a(j) + 2a(j + 1) for 0 <= j < 2^i. 1
1, 1, 5, 13, 5, 13, 41, 49, 5, 13, 41, 49, 41, 121, 221, 157, 5, 13, 41, 49, 41, 121, 221, 157, 41, 121, 221, 229, 365, 805, 977, 481, 5, 13, 41, 49, 41, 121, 221, 157, 41, 121, 221, 229, 365, 805, 977, 481, 41, 121, 221, 229, 365, 805, 977, 553, 365, 805, 1121, 1417, 2705 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,3

LINKS

Matthew House, Table of n, a(n) for n = 0..10000

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: A298497 A246922 A246921 * A293958 A089619 A094473

Adjacent sequences:  A170861 A170862 A170863 * A170865 A170866 A170867

KEYWORD

nonn

AUTHOR

N. J. A. Sloane, Jan 02 2010

STATUS

approved

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Last modified October 22 23:18 EDT 2018. Contains 316518 sequences. (Running on oeis4.)