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A154070
Number of planar triangular n X n X n nonnegative integer grids symmetric under 120 degree rotation with every similarly oriented 5 X 5 X 5 subtriangle summing to 8.
0
0, 115, 429, 0, 276, 892, 0, 186, 651, 0, 55, 198, 0, 20, 0
OFFSET
5,2
CROSSREFS
Sequence in context: A208815 A334345 A255143 * A251215 A218324 A258673
KEYWORD
nonn
AUTHOR
R. H. Hardin Jan 04 2009
STATUS
approved