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%I #4 Mar 31 2012 12:35:14
%S 1,1,1,3,5,9,19,57,217,857,3619,18707,117969,876253,7474981,73822321,
%T 851878121,11545709859,183325972139,3408618427993,73952504878933,
%U 1873630369319687,55462085673863451,1920965075733048401
%N Number of n X n binary arrays symmetric about main diagonal with all ones connected only in a 0100-1110-0111-0010 pattern in any orientation.
%e Maximal 8 X 8 example
%e .0.1.0.0.0.1.0.0
%e .1.1.1.0.1.1.1.0
%e .0.1.1.1.0.1.1.1
%e .0.0.1.0.0.0.1.0
%e .0.1.0.0.0.1.0.0
%e .1.1.1.0.1.1.1.0
%e .0.1.1.1.0.1.1.1
%e .0.0.1.0.0.0.1.0
%K nonn
%O 1,4
%A _R. H. Hardin_, Nov 04 2008