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Number of n X n binary arrays symmetric about main diagonal with all ones connected only in a 1100-0100-0111 pattern in any orientation.
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%I #4 Mar 31 2012 12:35:10

%S 1,1,1,1,3,9,23,51,307,2165,14201,97965,1157935,17853615,293568879,

%T 5611957605,149513863877,5116952638951,205718918489939

%N Number of n X n binary arrays symmetric about main diagonal with all ones connected only in a 1100-0100-0111 pattern in any orientation.

%e Maximal 8 X 8 example

%e .0.0.0.0.1.1.1.0

%e .0.0.0.0.0.0.1.0

%e .0.0.0.0.0.0.1.1

%e .0.0.0.0.0.1.0.0

%e .1.0.0.0.0.1.1.1

%e .1.0.0.1.1.0.0.1

%e .1.1.1.0.1.0.0.1

%e .0.0.1.0.1.1.1.0

%K nonn

%O 1,5

%A _R. H. Hardin_