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%I #3 Mar 31 2012 12:35:21
%S 1,2,4,16,64,499,3953,61786,971846,30167054,945677765,58569920903,
%T 3661573089790,452214656078450,56362299453225220,13875014401044838663,
%U 3447151263100307142903,1691594815727250621502922
%N Number of planar n X n X n binary triangular grids with mirror symmetry about one altitude with no more than 12 ones in any 5 X 5 X 5 subtriangle.
%K nonn
%O 0,2
%A _R. H. Hardin_ Jan 04 2009