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%I #4 Mar 31 2012 12:35:16
%S 1,1,1,1,1,5,13,29,79,475,3011,19375,140949,1504567,19831039,
%T 315319119,5871550053,136334165017,3923421131189,139268183686163
%N Number of n X n binary arrays symmetric about main diagonal with all ones connected only in a 1000-1100-0111-0001 pattern in any orientation.
%e Maximal 8 X 8 example
%e .0.0.0.0.0.0.1.1
%e .0.0.0.0.0.0.1.0
%e .0.0.0.0.0.1.1.0
%e .0.0.0.0.1.1.0.0
%e .0.0.0.1.0.0.0.0
%e .0.0.1.1.0.0.0.0
%e .1.1.1.0.0.0.0.0
%e .1.0.0.0.0.0.0.0
%K nonn
%O 1,6
%A _R. H. Hardin_, Nov 04 2008
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