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A153554
Number of planar n X n X n binary triangular grids with no more than 5 ones in any similarly oriented 3 X 3 X 3 subtriangle.
0
1, 2, 8, 63, 981, 30204, 1838258, 221168494, 52603569364, 24733230863897, 22989019296091325, 42240982234024058721, 153433971895782184082591, 1101749861754584729817380799, 15639340662707098047927162649965
OFFSET
0,2
CROSSREFS
Sequence in context: A098000 A084279 A153526 * A139018 A110708 A295232
KEYWORD
nonn
AUTHOR
R. H. Hardin, Jan 01 2009
STATUS
approved