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A160409
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First differences of toothpick numbers A160408.
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5
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1, 1, 2, 4, 4, 4, 4, 4, 8, 16, 16, 8, 4, 4, 8
(list; graph; refs; listen; history; internal format)
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OFFSET
| 1,3
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COMMENTS
| Number of toothpick added to the toothpick pyramid at the round n.
See also the toothpick sequences A139250, A160160 and the toothpick triangle A160406.
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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 06 2009: (Start)
Array begins:
========
x, y, z
========
1, 1, 2;
4, 4, 4;
4, 4, 8;
16, 16, 8;
4, 4, 8;
(End)
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CROSSREFS
| Cf. A139250, A139251, A160160, A160161, A160406, A160407, A160408.
Sequence in context: A035661 A159461 A046930 * A035645 A063440 A008497
Adjacent sequences: A160406 A160407 A160408 * A160410 A160411 A160412
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KEYWORD
| more,nonn
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AUTHOR
| Omar E. Pol (info(AT)polprimos.com), May 23 2009
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EXTENSIONS
| More terms from Omar E. Pol (info(AT)polprimos.com), Jun 06 2009
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