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%I #5 Apr 28 2021 00:08:20
%S 1,2,4,7,11,29,94,305,942,3700,17914,96925,550823,3593444,27564919,
%T 242155962,2360399737,25960549046,327176065746,4712254866397,
%U 76708072697647,1412166412163055,29553071463431116,703960430349591146
%N Number of planar n X n X n binary triangular grids with no more than 1 one in any 4 X 4 X 4 subtriangle.
%K nonn
%O 0,2
%A _R. H. Hardin_, Jan 01 2009
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