A160723 First differences of A160722.

1, 4, 4, 10, 4, 10, 10, 22, 4, 10, 10, 22, 10, 22, 22, 46, 4, 10, 10, 22, 10, 22, 22, 46, 10, 22, 22, 46, 22, 46, 46, 94, 4, 10, 10, 22, 10, 22, 22, 46, 10, 22, 22, 46, 22, 46, 46, 94, 10, 22, 22, 46, 22, 46, 46, 94, 22, 46, 46, 94, 46, 94, 94, 190

Offset

1,2

Links

Table of n, a(n) for n=1..64.

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

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

Formula

a(n) = 3*A001316(n-1) - 2

Crossrefs

Cf. A139250, A139251, A160720, A160721, A160722.

Sequence in context: A205549 A120395 A321078 * A255486 A286779 A007426

Adjacent sequences: A160720 A160721 A160722 * A160724 A160725 A160726

Keyword

nonn

Author

Omar E. Pol, May 25 2009

Extensions

Formula and more terms from Max Alekseyev, Sep 08 2011

Status

approved