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%I #5 Apr 28 2021 00:18:19
%S 1,2,2,3,5,9,17,59,104,345,1199,3851,12806,82134,263587,1652702,
%T 10527130,63679653,393522264,4714694321,28217205768,327320006475,
%U 3884899169563,43662102002059,501940164730369,11189482352958319,124569478026604902
%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 3 X 3 X 3 subtriangle.
%K nonn
%O 0,2
%A _R. H. Hardin_, Jan 03 2009
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