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%I #3 Mar 31 2012 12:35:21
%S 1,2,4,16,64,508,4054,64383,1024957,32457661,1032121857,65351102113,
%T 4153964152453,525755086303623,66797889955402370,16898128960552112680,
%U 4291148950249485286442,2169726567052465643085463
%N Number of planar n X n X n binary triangular grids with mirror symmetry about one altitude with no more than 13 ones in any 5 X 5 X 5 subtriangle.
%K nonn
%O 0,2
%A _R. H. Hardin_ Jan 04 2009