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A154085
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 12.
0
70, 480, 2928, 2735, 3045, 14039, 12442, 4685, 25484, 7105, 3050
OFFSET
5,1
CROSSREFS
Sequence in context: A172222 A157369 A163434 * A220365 A007330 A060541
KEYWORD
nonn
AUTHOR
R. H. Hardin Jan 04 2009
STATUS
approved