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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 12.
0

%I #3 Mar 31 2012 12:35:22

%S 70,480,2928,2735,3045,14039,12442,4685,25484,7105,3050

%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 12.

%K nonn

%O 5,1

%A _R. H. Hardin_ Jan 04 2009