A166187 Number of n X n X n triangular nonnegative integer arrays with all sums of an element and its neighbors <= 15.

1, 16, 816, 70308, 69652946, 300342814211

Offset

0,2

Links

Table of n, a(n) for n=0..5.

Crossrefs

Sequence in context: A186855 A159872 A220750 * A363988 A223113 A145243

Adjacent sequences: A166184 A166185 A166186 * A166188 A166189 A166190

Keyword

nonn

Author

R. H. Hardin Oct 09 2009

Status

approved