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Search: id:A154004
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A154004 Number of planar n X n X n binary triangular grids with mirror symmetry about one altitude with no more than 14 ones in any 5 X 5 X 5 subtriangle. +0
1
1, 2, 4, 16, 64, 511, 4087, 65266, 1043960, 33294340, 1064788451, 67924859273, 4344369237533, 554246140585577, 70893824733656698, 18088030701247974490, 4627052123343980555078, 2360992279682367231113937 (list; graph; listen)
OFFSET

0,2
CROSSREFS

Sequence in context: A153995 A153998 A154001 this_sequence A060656 A061286 A019279

Adjacent sequences: A154001 A154002 A154003 this_sequence A154005 A154006 A154007

KEYWORD

nonn

AUTHOR

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

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

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