

A163312


Row sums of triangle A163311


1



1, 3, 8, 17, 34, 64, 114, 195, 325, 529, 840, 1303, 1977, 2940
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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), 157191. [There is a typo in Theorem 6: (13) should read u(n) = 4.3^(wt(n1)1) for n >= 2.]
N. J. A. Sloane, Catalog of Toothpick and Cellular Automata Sequences in the OEIS


FORMULA

a(n) = sum of nth 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



