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%I #5 Apr 28 2021 00:18:39
%S 1,2,2,3,4,7,9,37,44,122,360,837,1955,11063,21562,102402,455597,
%T 1800255,6701316,61868659,193623470,1467251281,10855933316,
%U 68253791333,417351118269,6197640479557,31389717866283,387573069042758
%N Number of planar n X n X n binary triangular grids symmetric both under 120 degree rotation and reflection with no more than 4 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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