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A151692
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G.f.: Prod_{ k >= 2 } (1 + x^(2^k-1) + x^(2^k)).
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10
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1, 0, 0, 1, 1, 0, 0, 1, 1, 0, 1, 2, 1, 0, 0, 1, 1, 0, 1, 2, 1, 0, 1, 2, 1, 1, 3, 3, 1, 0, 0, 1, 1, 0, 1, 2, 1, 0, 1, 2, 1, 1, 3, 3, 1, 0, 1, 2, 1, 1, 3, 3, 1, 1, 3, 3, 2, 4, 6, 4, 1, 0, 0, 1, 1, 0, 1, 2, 1, 0, 1, 2, 1, 1, 3, 3, 1, 0, 1, 2, 1, 1, 3, 3, 1, 1, 3, 3, 2, 4, 6, 4, 1, 0, 1, 2, 1, 1, 3, 3, 1, 1, 3, 3, 2
(list; graph; refs; listen; history; internal format)
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OFFSET
| 0,12
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LINKS
| 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
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EXAMPLE
| Contribution from Omar E. Pol (info(AT)polprimos.com), Jun 09 2009: (Start)
Triangle begins:
1;
0,0;
1,1,0,0;
1,1,0,1,2,1,0,0;
1,1,0,1,2,1,0,1,2,1,1,3,3,1,0,0;
1,1,0,1,2,1,0,1,2,1,1,3,3,1,0,1,2,1,1,3,3,1,1,3,3,2,4,6,4,1,0,0;
1,1,0,1,2,1,0,1,2,1,1,3,3,1,0,1,2,1,1,3,3,1,1,3,3,2,4,6,4,1,0,1,2,1,1,3,3,...
(End)
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CROSSREFS
| For generating functions of the form Prod_{k>=c} (1+a*x^(2^k-1)+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. A160573, A151552.
Cf. A000079. [From Omar E. Pol (info(AT)polprimos.com), Jun 09 2009]
Sequence in context: A035227 A049340 A056929 * A115201 A118229 A172250
Adjacent sequences: A151689 A151690 A151691 * A151693 A151694 A151695
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KEYWORD
| nonn
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AUTHOR
| N. J. A. Sloane (njas(AT)research.att.com), Jun 04 2009
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