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A161329 First differences of A161328. 9
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 (list; graph; refs; listen; history; text; internal format)
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: A208772 A071810 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

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Last modified November 26 05:48 EST 2022. Contains 358353 sequences. (Running on oeis4.)