A160122 a(n) = A160121(n+1)*2/3.

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

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: A086568 A351091 A239074 * A093656 A338616 A174028

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