%I #4 Mar 31 2012 12:35:10
%S 1,1,1,1,1,1,1,1,5,9,17,25,55,133,419,1009,4455,14333,61219,207501,
%T 982915,4258653,26235061,130258871,1014665059,6176852821
%N Number of n X n binary arrays symmetric about both diagonal and antidiagonal with all ones connected only in a 111-110-111 pattern in any orientation.
%e Maximal 9 X 9 example
%e .0.0.0.1.0.1.0.0.0
%e .0.0.0.1.1.1.0.0.0
%e .0.0.0.1.1.1.0.0.0
%e .1.1.1.0.0.0.1.1.1
%e .0.1.1.0.0.0.1.1.0
%e .1.1.1.0.0.0.1.1.1
%e .0.0.0.1.1.1.0.0.0
%e .0.0.0.1.1.1.0.0.0
%e .0.0.0.1.0.1.0.0.0
%K nonn
%O 1,9
%A _R. H. Hardin_