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A153549
Number of planar n X n X n binary triangular grids with no more than 2 ones in any similarly oriented 2 X 2 X 2 subtriangle.
0
1, 2, 7, 45, 523, 11039, 422661, 29363700, 3701326718, 846522284413, 351279112544918, 264484064187115475, 361309917557640153256, 895557464235637917670130, 4027543439600489230428646003
OFFSET
0,2
CROSSREFS
Sequence in context: A098637 A162045 A326878 * A348880 A079491 A266908
KEYWORD
nonn
AUTHOR
R. H. Hardin, Jan 01 2009
STATUS
approved