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Search: id:A153994
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A153994 Number of planar n X n X n binary triangular grids symmetric under 120 degree rotation with no more than 11 ones in any 5 X 5 X 5 subtriangle. +0
1
1, 2, 2, 4, 16, 26, 114, 913, 3227, 25373, 441919, 3146641, 49361868, 1683721022, 23850420259, 734273471828, 49324500595954, 1380740815171041 (list; graph; listen)
OFFSET

0,2
CROSSREFS

Sequence in context: A087783 A106241 A153991 this_sequence A102864 A153997 A154000

Adjacent sequences: A153991 A153992 A153993 this_sequence A153995 A153996 A153997

KEYWORD

nonn

AUTHOR

Ron Hardin (rhhardin(AT)att.net) Jan 04 2009

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Last modified November 29 12:46 EST 2009. Contains 167659 sequences.

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