%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