%I #5 Apr 28 2021 00:17:17
%S 1,2,2,3,3,4,4,11,13,23,52,78,125,442,560,1364,4023,8112,18507,78876,
%T 143191,474516,1865001,4873926,14609812,86022947,196603644,883908229,
%U 4638184260,15946489644,63408340357
%N Number of planar n X n X n binary triangular grids symmetric both under 120 degree rotation and reflection with no more than 3 ones in any 5 X 5 X 5 subtriangle.
%K nonn
%O 0,2
%A _R. H. Hardin_, Jan 03 2009