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%I #3 Mar 31 2012 12:35:21
%S 1,2,2,4,11,23,83,542,2154,15035,184615,1315991,16739106,377984235,
%T 5010747205,118406407922,4950057264228,123458500863829
%N Number of planar n X n X n binary triangular grids symmetric under 120 degree rotation with no more than 6 ones in any 4 X 4 X 4 subtriangle.
%K nonn
%O 0,2
%A _R. H. Hardin_ Jan 03 2009
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