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%I #4 Mar 31 2012 12:35:09
%S 1,1,1,1,5,17,37,167,1407,11143,90213,1212859,22145521,452553163,
%T 11809473343,424547990571,19424907241691,1100794820702881,
%U 80980732651220757,7763187679043412101,948623501056895583231
%N Number of n X n binary arrays symmetric about main diagonal with all ones connected only in a 110-111-001 pattern in any orientation.
%e Maximal 8 X 8 example
%e .0.0.1.1.0.1.1.0
%e .0.0.1.1.0.0.1.1
%e .1.1.0.1.1.0.1.1
%e .1.1.1.0.0.1.0.0
%e .0.0.1.0.0.1.1.1
%e .1.0.0.1.1.0.1.1
%e .1.1.1.0.1.1.0.0
%e .0.1.1.0.1.1.0.0
%K nonn
%O 1,5
%A _R. H. Hardin_
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