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%I #4 Mar 31 2012 12:35:10
%S 1,1,1,1,1,13,27,135,527,2581,17899,176183,1596080,23232289,321756402,
%T 6986541337,150961652645,4812704574943,154830665386988
%N Number of n X n binary arrays symmetric under 180 degree rotation with all ones connected only in a 0100-1111-0100 pattern in any orientation.
%e Maximal 8 X 8 example
%e .0.0.0.0.0.1.0.0
%e .0.0.0.0.1.1.1.1
%e .0.1.0.0.0.1.0.0
%e .1.1.1.1.0.0.1.0
%e .0.1.0.0.1.1.1.1
%e .0.0.1.0.0.0.1.0
%e .1.1.1.1.0.0.0.0
%e .0.0.1.0.0.0.0.0
%K nonn
%O 1,6
%A _R. H. Hardin_