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A160122 a(n) = A160121(n+1)*2/3. 1
2, 2, 6, 2, 6, 6, 14, 6, 6, 6, 14, 10, 14, 18, 34, 18, 6, 6, 14, 10, 14, 18, 34, 22, 14, 18, 34, 34, 38, 46, 78, 54, 14, 6, 14, 10, 14, 18, 34, 22, 14, 18, 34, 34, 38, 46, 78, 58, 22, 18, 34, 34, 38, 50, 86, 78, 50, 46, 78, 90, 94, 114, 186, 154, 46, 6, 14 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

LINKS

Table of n, a(n) for n=1..67.

David Applegate, Omar E. Pol and N. J. A. Sloane, The Toothpick Sequence and Other Sequences from Cellular Automata, Congressus Numerantium, Vol. 206 (2010), 157-191. [There is a typo in Theorem 6: (13) should read u(n) = 4.3^(wt(n-1)-1) for n >= 2.]

N. J. A. Sloane, Catalog of Toothpick and Cellular Automata Sequences in the OEIS

CROSSREFS

Y-toothpick sequence: A160120. Cf. A160121, A160123.

Cf. A139250, A139251. [From Omar E. Pol, Jun 16 2009]

Sequence in context: A175194 A086568 A239074 * A093656 A174028 A084426

Adjacent sequences:  A160119 A160120 A160121 * A160123 A160124 A160125

KEYWORD

nonn

AUTHOR

Omar E. Pol, May 02 2009

EXTENSIONS

More terms from Omar E. Pol, Jun 16 2009

STATUS

approved

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Last modified November 16 22:05 EST 2019. Contains 329208 sequences. (Running on oeis4.)