A166208 Number of nXnXn triangular nonnegative integer arrays, symmetric under 120 degree rotation, with all sums of an element and its neighbors <= 13

1, 14, 5, 21, 616, 3614, 65576, 6508702, 119636627, 10193915255, 4710009299519

Offset

0,2

Links

Table of n, a(n) for n=0..10.

Crossrefs

Sequence in context: A180848 A331482 A068609 * A367327 A239863 A294899

Adjacent sequences: A166205 A166206 A166207 * A166209 A166210 A166211

Keyword

nonn

Author

R. H. Hardin Oct 09 2009

Status

approved