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Number of planar triangular n X n X n nonnegative integer grids with mirror symmetry about one altitude with every similarly oriented 4 X 4 X 4 subtriangle summing to 10.
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%I #3 Mar 31 2012 12:35:22

%S 378,3930,3121,12164,6241,21168,6550,13276,3181,6207,1260,3165,1024,

%T 3226,983,2793,935,3076,935,2781,935,3076,935,2781,935,3076,935,2781,

%U 935,3076,935,2781,935,3076,935,2781,935,3076,935,2781,935,3076,935,2781,935,3076

%N Number of planar triangular n X n X n nonnegative integer grids with mirror symmetry about one altitude with every similarly oriented 4 X 4 X 4 subtriangle summing to 10.

%C Pattern 935 3076 935 2781 starts at n=20 and continues through at least n=52.

%K nonn

%O 4,1

%A _R. H. Hardin_ Jan 04 2009