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%I #5 Apr 28 2021 00:19:05
%S 1,2,2,3,15,24,95,901,2926,22625,415047,2632895,39794767,1442122393,
%T 17977314936,535815289761,38169625321927,935805308861487,
%U 54839755115620718,7680772354691458379,370282826884218784372
%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 3 X 3 X 3 subtriangle.
%K nonn
%O 0,2
%A _R. H. Hardin_, Jan 03 2009
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