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A163312 Row sums of triangle A163311 1
1, 3, 8, 17, 34, 64, 114, 195, 325, 529, 840, 1303, 1977, 2940 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

COMMENTS

Triangle A163311 by diagonals = the infinite set of Toothpick sequences.

LINKS

Table of n, a(n) for n=1..14.

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

FORMULA

a(n) = sum of n-th row terms, triangle A163311

EXAMPLE

a(4) = 17 = (1, + 4 + 7, + 5).

CROSSREFS

A163311

Sequence in context: A002626 A029859 A305105 * A131253 A145071 A182734

Adjacent sequences:  A163309 A163310 A163311 * A163313 A163314 A163315

KEYWORD

nonn

AUTHOR

Gary W. Adamson, Jul 24 2009

STATUS

approved

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Last modified November 18 19:59 EST 2019. Contains 329288 sequences. (Running on oeis4.)