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Search: id:A153523
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A153523 Number of planar n X n X n binary triangular grids with no more than 2 ones in any 3 X 3 X 3 subtriangle. +0
1
1, 2, 7, 22, 132, 1204, 13768, 244089, 6352095, 232890454, 12491887452, 974287563383, 109587446419665, 17874622451841230, 4227153018169110373, 1447295404720506832342, 717895790307321893024403 (list; graph; listen)
OFFSET

0,2
CROSSREFS

Sequence in context: A057787 A004300 A049369 this_sequence A153551 A125285 A122631

Adjacent sequences: A153520 A153521 A153522 this_sequence A153524 A153525 A153526

KEYWORD

nonn

AUTHOR

Ron Hardin (rhhardin(AT)att.net) Jan 01 2009

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Last modified December 19 12:50 EST 2009. Contains 171053 sequences.

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