

A151694


G.f.: Prod_{ k >= 1 } (1 + 2*x^(2^k1) + 2*x^(2^k)).


10



1, 2, 2, 2, 6, 8, 4, 2, 6, 8, 8, 16, 28, 24, 8, 2, 6, 8, 8, 16, 28, 24, 12, 16, 28, 32, 48, 88, 104, 64, 16, 2, 6, 8, 8, 16, 28, 24, 12, 16, 28, 32, 48, 88, 104, 64, 20, 16, 28, 32, 48, 88, 104, 72, 56, 88, 120, 160, 272, 384, 336, 160, 32, 2, 6, 8, 8, 16, 28, 24, 12, 16, 28, 32, 48, 88
(list;
graph;
refs;
listen;
history;
text;
internal format)



OFFSET

0,2


LINKS

Table of n, a(n) for n=0..75.
David Applegate, Omar E. Pol and N. J. A. Sloane, The Toothpick Sequence and Other Sequences from Cellular Automata
N. J. A. Sloane, Catalog of Toothpick and Cellular Automata Sequences in the OEIS


EXAMPLE

Contribution from Omar E. Pol, Jun 09 2009: (Start)
Triangle begins:
.1;
.2,2;
.2,6,8,4;
.2,6,8,8,16,28,24,8;
.2,6,8,8,16,28,24,12,16,28,32,48,88,104,64,16;
.2,6,8,8,16,28,24,12,16,28,32,48,88,104,64,20,16,28,32,48,88,104,72,56,88,...
(End)


CROSSREFS

For generating functions of the form Prod_{k>=c} (1+a*x^(2^k1)+b*x^2^k)) for the following values of (a,b,c) see: (1,1,0) A160573, (1,1,1) A151552, (1,1,2) A151692, (2,1,0) A151685, (2,1,1) A151691, (1,2,0) A151688 and A152980, (1,2,1) A151550, (2,2,0) A151693, (2,2,1) A151694
Cf. A000079. [From Omar E. Pol, Jun 09 2009]
Sequence in context: A081478 A105341 A194676 * A298745 A121698 A087482
Adjacent sequences: A151691 A151692 A151693 * A151695 A151696 A151697


KEYWORD

nonn


AUTHOR

N. J. A. Sloane, Jun 04 2009


STATUS

approved



