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A166210
Number of nXnXn triangular nonnegative integer arrays, symmetric under 120 degree rotation, with all sums of an element and its neighbors <= 15
1
1, 16, 6, 27, 977, 6434, 146337, 20390870, 470828929, 56179164262
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OFFSET
0,2
LINKS
Table of n, a(n) for n=0..9.
CROSSREFS
Sequence in context:
A084517
A070568
A161884
*
A141078
A298830
A302215
Adjacent sequences:
A166207
A166208
A166209
*
A166211
A166212
A166213
KEYWORD
nonn
AUTHOR
R. H. Hardin
Oct 09 2009
STATUS
approved
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Last modified May 15 14:34 EDT 2024. Contains 372540 sequences. (Running on oeis4.)