A161417 First differences of A160416.

1, 7, 3, 21, 7, 41, 9, 57, 13

Offset

1,2

Links

Table of n, a(n) for n=1..9.

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

Cf. A139250, A139251, A153006, A152980, A160411, A160413, A160415, A160416.

Cf. A160797.

Sequence in context: A356890 A160797 A050013 * A070409 A166481 A050012

Adjacent sequences: A161414 A161415 A161416 * A161418 A161419 A161420

Keyword

more,nonn

Author

Omar E. Pol, May 20 2009, Jun 14 2009

Status

approved