A160163 First differences of A160162.

1, 1, 2, 4, 4, 2, 4, 6, 4, 4, 8, 12, 10, 6, 10, 10, 4, 4, 8, 12, 10, 8, 14, 16, 12, 16, 28, 34, 26, 20, 26, 18, 4, 4, 8, 12, 10, 8, 14, 16, 12, 16, 28, 34, 26, 22, 30, 24, 12, 16, 28, 34, 28, 30, 44, 44

Offset

1,3

Links

Table of n, a(n) for n=1..56.

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

Formula

a(n) = A160159(n)/2.

Crossrefs

Cf. A139250, A139251, A160158, A160159, A160162.

Sequence in context: A096832 A016588 A234247 * A263442 A206396 A206389

Adjacent sequences: A160160 A160161 A160162 * A160164 A160165 A160166

Keyword

nonn

Author

Omar E. Pol, May 29 2009

Extensions

More terms from Colin Barker, Apr 19 2015

Status

approved