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A166224
Number of 16X16X16 triangular nonnegative integer arrays, symmetric under 120 degree rotation, with all sums of an element and its neighbors <= n
1
1, 27376, 166762668, 342881668736, 219536965840260, 59492448257857640
OFFSET
0,2
CROSSREFS
Sequence in context: A168215 A224626 A237296 * A187533 A321159 A236503
KEYWORD
nonn
AUTHOR
R. H. Hardin Oct 09 2009
STATUS
approved