A170844 G.f.: Product_{k>=0} (1 + 3x^(2^k-1) + x^(2^k)).

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

Table of n, a(n) for n=0..59.

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

Sequence in context: A191509 A218356 A249120 * A051432 A064461 A046737

Adjacent sequences: A170841 A170842 A170843 * A170845 A170846 A170847

Keyword

nonn

Author

N. J. A. Sloane, Jan 02 2010

Status

approved