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A153565
Number of planar n X n X n binary triangular grids with no more than 3 ones in any similarly oriented 5 X 5 X 5 subtriangle.
0
1, 2, 8, 42, 176, 576, 5196, 73620, 1358751, 28558756, 692751617, 26643595004, 1466710451867, 108327240281718, 10438694555033407
OFFSET
0,2
CROSSREFS
Sequence in context: A364707 A342152 A153537 * A153528 A153557 A231103
KEYWORD
nonn
AUTHOR
R. H. Hardin, Jan 01 2009
STATUS
approved