%I #3 Mar 31 2012 12:35:22
%S 35,159,734,695,675,1988,1941,881,2067,949,707,1003,551
%N Number of planar triangular n X n X n nonnegative integer grids symmetric under 120 degree rotation with every similarly oriented 5 X 5 X 5 subtriangle summing to 9.
%K nonn
%O 5,1
%A _R. H. Hardin_ Jan 04 2009