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A170856 a(0) = 0, a(1) = 1; a(2^i + j) = 2a(j) + 3a(j + 1) for 0 <= j < 2^i. 0
0, 1, 3, 11, 3, 11, 39, 31, 3, 11, 39, 31, 39, 139, 171, 71, 3, 11, 39, 31, 39, 139, 171, 71, 39, 139, 171, 179, 495, 791, 555, 151, 3, 11, 39, 31, 39, 139, 171, 71, 39, 139, 171, 179, 495, 791, 555, 151, 39, 139, 171, 179, 495, 791, 555, 259, 495, 791, 879, 1843, 3363, 3247 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,3

LINKS

Table of n, a(n) for n=0..61.

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: A110221 A244237 A238683 * A176781 A226625 A210610

Adjacent sequences:  A170853 A170854 A170855 * A170857 A170858 A170859

KEYWORD

nonn

AUTHOR

N. J. A. Sloane, Jan 02 2010

STATUS

approved

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Last modified February 19 11:04 EST 2018. Contains 299330 sequences. (Running on oeis4.)