|
%I #5 Apr 28 2021 00:16:45
%S 1,2,723,3847,12686,64066,522788,2375205,17429033,207659953,
%T 1416380562,15388271829,267002004687,2673537774503,42803194029689,
%U 1082510269366192
%N Number of planar n X n X n binary triangular grids symmetric under 120 degree rotation with no more than 3 ones in any 4 X 4 X 4 subtriangle.
%K nonn
%O 0,2
%A _R. H. Hardin_, Jan 03 2009
|
