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A170844
G.f.: Product_{k>=0} (1 + 3x^(2^k-1) + x^(2^k)).
0
4, 13, 7, 13, 43, 34, 10, 13, 43, 34, 46, 142, 145, 64, 13, 13, 43, 34, 46, 142, 145, 64, 49, 142, 145, 172, 472, 577, 337, 103, 16, 13, 43, 34, 46, 142, 145, 64, 49, 142, 145, 172, 472, 577, 337, 103, 52, 142, 145, 172, 472, 577, 337, 211, 475, 577, 661, 1588, 2203, 1588
OFFSET
0,1
LINKS
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.]
CROSSREFS
Sequence in context: A191509 A218356 A249120 * A051432 A064461 A046737
KEYWORD
nonn
AUTHOR
N. J. A. Sloane, Jan 02 2010
STATUS
approved