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%I #3 Mar 31 2012 12:35:21
%S 1,2,2,3,8,18,64,323,1239,7677,70851,462347,4699837,77982415,
%T 865056340,15519583779,437728798867,8808271045842,278977031301418
%N Number of planar n X n X n binary triangular grids symmetric under 120 degree rotation with no more than 5 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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