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Search: id:A160409
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| 1, 1, 2, 4, 4, 4, 4, 4, 8, 16, 16, 8, 4, 4, 8
(list; graph; listen)
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OFFSET
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1,3
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COMMENT
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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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EXAMPLE
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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
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Cf. A139250, A139251, A160160, A160161, A160406, A160407, A160408.
Sequence in context: A035661 A159461 A046930 this_sequence A035645 A063440 A008497
Adjacent sequences: A160406 A160407 A160408 this_sequence A160410 A160411 A160412
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KEYWORD
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more,nonn
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AUTHOR
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Omar E. Pol (info(AT)polprimos.com), May 23 2009
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EXTENSIONS
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More terms from Omar E. Pol (info(AT)polprimos.com), Jun 06 2009
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