%I #4 Mar 31 2012 12:35:14
%S 1,1,1,1,3,7,19,47,187,1053,6641,45779,382213,4162011,56301753,
%T 896342697,17171206379,405427693543,11818746061515,417444288436423
%N Number of n X n binary arrays symmetric about main diagonal with all ones connected only in a 1000-1010-1111 pattern in any orientation.
%e Maximal 8 X 8 example
%e .0.1.1.1.1.0.0.0
%e .1.0.1.0.1.0.0.0
%e .1.1.0.0.1.0.0.0
%e .1.0.0.0.0.1.1.1
%e .1.1.1.0.0.0.0.1
%e .0.0.0.1.0.0.1.1
%e .0.0.0.1.0.1.0.1
%e .0.0.0.1.1.1.1.0
%K nonn
%O 1,5
%A _R. H. Hardin_, Nov 04 2008
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