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Number of nXnXn triangular nonnegative integer arrays, symmetric under 120 degree rotation, with all sums of an element and its neighbors <= 16
1

%I #3 Mar 31 2012 12:35:35

%S 1,17,6,30,1207,8387,211677,34490146,884190706,123191992504

%N Number of nXnXn triangular nonnegative integer arrays, symmetric under 120 degree rotation, with all sums of an element and its neighbors <= 16

%K nonn

%O 0,2

%A _R. H. Hardin_ Oct 09 2009