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A168115 a(n) = A139560(n+1)/2. 0
1, 1, 1, 2, 2, 1, 1, 2, 2, 2, 4, 6, 4, 1, 1, 2, 2, 2, 4, 6, 4, 2, 4, 6, 6, 8, 14, 16, 8, 1, 1, 2, 2, 2, 4, 6, 4, 2, 4, 6, 6, 8, 14, 16, 8, 2, 4, 6, 6, 8, 14, 16, 10, 8, 14, 18, 20, 30, 44, 40, 16, 1, 1, 2, 2, 2, 4, 6, 4, 2, 4, 6, 6, 8, 14, 16 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,4

LINKS

Table of n, a(n) for n=1..76.

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

Cf. A139250, A139252, A139560.

Sequence in context: A151702 A151552 A160418 * A269982 A153864 A112399

Adjacent sequences:  A168112 A168113 A168114 * A168116 A168117 A168118

KEYWORD

nonn

AUTHOR

Omar E. Pol, Dec 09 2009

EXTENSIONS

Terms after a(27) from Nathaniel Johnston, Mar 29 2011

STATUS

approved

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Last modified October 20 22:23 EDT 2018. Contains 316404 sequences. (Running on oeis4.)