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A160170 X-Toothpick sequence (A three-dimensional sieve). +0
7
0, 1, 5, 13, 21, 45 (list; graph; listen)
OFFSET

0,3
CROSSREFS

Cf. A139250, A160120, A160160, A160171.

Sequence in context: A065766 A034170 A166051 this_sequence A060004 A076408 A083800

Adjacent sequences: A160167 A160168 A160169 this_sequence A160171 A160172 A160173

KEYWORD

more,nonn

AUTHOR

Omar E. Pol (info(AT)polprimos.com), May 03 2009

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Last modified December 7 08:40 EST 2009. Contains 170430 sequences.

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