%I #5 Apr 28 2021 00:02:08
%S 1,2,7,22,132,1204,13768,244089,6352095,232890454,12491887452,
%T 974287563383,109587446419665,17874622451841230,4227153018169110373,
%U 1447295404720506832342,717895790307321893024403
%N Number of planar n X n X n binary triangular grids with no more than 2 ones in any 3 X 3 X 3 subtriangle.
%K nonn
%O 0,2
%A _R. H. Hardin_, Jan 01 2009
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