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Search: id:A153944
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A153944 Number of planar n X n X n binary triangular grids symmetric under 120 degree rotation with no more than 5 ones in any 5 X 5 X 5 subtriangle. +0
1
1, 2, 2, 3, 8, 6, 28, 164, 366, 1829, 16995, 53701, 369189, 5605587, 28526549, 299788077, 7021649770, 53533022280 (list; graph; listen)
OFFSET

0,2
CROSSREFS

Sequence in context: A056762 A069830 A153935 this_sequence A046652 A091681 A076541

Adjacent sequences: A153941 A153942 A153943 this_sequence A153945 A153946 A153947

KEYWORD

nonn

AUTHOR

Ron Hardin (rhhardin(AT)att.net) Jan 03 2009

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Last modified December 21 10:15 EST 2009. Contains 171081 sequences.

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