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Search: id:A161828
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A161828 Number of rhombuses in the Y-Toothpick sieve of A160120 after n rounds. +0
11
0, 0, 3, 3, 9, 9, 15, 21, 33, 39 (list; graph; listen)
OFFSET

0,3
CROSSREFS

Cf. A139250, A160120, A160124, A161419, A161418, A161836.

Sequence in context: A098355 A107443 A062234 this_sequence A086739 A147502 A147343

Adjacent sequences: A161825 A161826 A161827 this_sequence A161829 A161830 A161831

KEYWORD

more,nonn

AUTHOR

Omar E. Pol (info(AT)polprimos.com), Jun 21 2009

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Last modified November 25 20:09 EST 2009. Contains 167514 sequences.

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