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A166207
Number of nXnXn triangular nonnegative integer arrays, symmetric under 120 degree rotation, with all sums of an element and its neighbors <= 12.
1
1, 13, 5, 19, 479, 2636, 42285, 3484228, 56578703, 4011008946, 1447700846889, 76408068978456
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OFFSET
0,2
LINKS
Table of n, a(n) for n=0..11.
CROSSREFS
Sequence in context:
A068662
A235366
A388078
*
A121230
A299959
A392905
Adjacent sequences:
A166204
A166205
A166206
*
A166208
A166209
A166210
KEYWORD
nonn
AUTHOR
R. H. Hardin
, Oct 09 2009
STATUS
approved
