A151836 First differences of A147552.

1, 4, 4, 12, 4, 12, 12, 28, 4, 12, 12, 28, 20, 28, 36, 68, 4, 12, 12, 28, 20, 28, 36, 68, 36, 28, 36, 68, 68, 76, 100, 172, 12, 28, 12, 28, 20, 28, 36, 68, 36, 28, 36, 68, 68, 76, 100, 172, 76, 28, 36, 68, 68, 76

Offset

1,2

Links

Table of n, a(n) for n=1..54.

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, A147552, A151837, A160721.

Sequence in context: A273452 A178182 A160721 * A147582 A162793 A269568

Adjacent sequences: A151833 A151834 A151835 * A151837 A151838 A151839

Keyword

nonn

Author

N. J. A. Sloane, Jul 13 2009

Extensions

Terms after a(30) from Nathaniel Johnston, Mar 27 2011

Status

approved