%I #4 Mar 31 2012 12:35:14
%S 1,1,1,1,1,5,17,37,137,741,5145,37997,337079,3889419,55427643,
%T 967896983,20644031605,543669795557,17692139622867,706505935324823
%N Number of n X n binary arrays symmetric about main diagonal with all ones connected only in a 1100-1111-0001 pattern in any orientation.
%e Maximal 8 X 8 example
%e .0.0.0.0.0.0.0.0
%e .0.0.0.0.0.0.0.0
%e .0.0.0.0.1.0.0.0
%e .0.0.0.0.1.1.1.1
%e .0.0.1.1.0.0.1.1
%e .0.0.0.1.0.0.0.0
%e .0.0.0.1.1.0.0.0
%e .0.0.0.1.1.0.0.0
%K nonn
%O 1,6
%A _R. H. Hardin_, Nov 04 2008
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