Reminder: The OEIS is hiring a new managing editor, and the application deadline is January 26.
%I #4 Mar 31 2012 12:35:12
%S 1,1,1,1,1,5,17,43,145,633,4131,31831,267243,2665825,33726547,
%T 521722083,9834245987,228276099483,6476476460303,221310304612835,
%U 9127636122908961
%N Number of n X n binary arrays symmetric about main diagonal with all ones connected only in a 0010-1010-1111 pattern in any orientation.
%e Maximal 8 X 8 example
%e .0.0.1.1.1.1.0.0
%e .0.0.1.0.1.0.0.0
%e .1.1.0.0.1.0.0.1
%e .1.0.0.0.0.1.1.1
%e .1.1.1.0.0.0.0.1
%e .1.0.0.1.0.0.1.1
%e .0.0.0.1.0.1.0.0
%e .0.0.1.1.1.1.0.0
%K nonn
%O 1,6
%A _R. H. Hardin_, Nov 04 2008