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Reminder: The OEIS is hiring a new managing editor, and the application deadline is January 26.
%I #4 Mar 31 2012 12:35:15
%S 1,1,1,1,3,5,7,11,39,91,199,489,1779,6121,21635,87281,429831
%N Number of n X n binary arrays symmetric about both diagonal and antidiagonal with all ones connected only in a 1000-1100-0110-0011 pattern in any orientation.
%e Maximal 8 X 8 example
%e .0.0.0.0.1.1.0.0
%e .0.0.0.1.0.1.1.0
%e .0.0.0.1.1.0.1.1
%e .0.1.1.0.1.1.0.1
%e .1.0.1.1.0.1.1.0
%e .1.1.0.1.1.0.0.0
%e .0.1.1.0.1.0.0.0
%e .0.0.1.1.0.0.0.0
%K nonn
%O 1,5
%A _R. H. Hardin_, Nov 04 2008