A161329 First differences of A161328.

1, 3, 5, 7, 13, 11, 17, 15, 21, 23, 25, 27, 33, 27, 25, 15, 25, 35, 41, 55, 53, 59, 61, 59, 65, 63, 57, 47, 37, 47, 65, 71, 97, 95, 105, 95, 89, 83, 81, 87, 93, 79, 73, 79, 89, 107, 113, 119, 113, 115, 117, 135, 125, 127, 129, 135, 153, 135

Offset

1,2

Comments

Number of E-Toothpicks added to the E-Toothpick structure at the n-th round.

Links

Table of n, a(n) for n=1..58.

David Applegate, The movie version

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. A139251, A160121, A160173, A161328, A161331.

Sequence in context: A071810 A373654 A137576 * A111745 A098957 A143245

Adjacent sequences: A161326 A161327 A161328 * A161330 A161331 A161332

Keyword

nonn

Author

Omar E. Pol, Jun 07 2009

Extensions

a(8) corrected and more terms added by R. J. Mathar, Jan 21 2010

Status

approved