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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 12:35:09
%S 1,1,1,1,1,1,1,1,1,1,5,5,17,17,43,43,197,197,1293,1293,11263,11263,
%T 110807,110807,1310257
%N Number of n X n binary arrays symmetric about the diagonal and under 90 degree rotation with all ones connected only in a 110-111-100 pattern in any orientation.
%e Maximal 11 X 11 example
%e .0.0.0.0.1.0.1.0.0.0.0
%e .0.0.1.1.1.0.1.1.1.0.0
%e .0.1.0.1.1.0.1.1.0.1.0
%e .0.1.1.0.0.0.0.0.1.1.0
%e .1.1.1.0.0.0.0.0.1.1.1
%e .0.0.0.0.0.0.0.0.0.0.0
%e .1.1.1.0.0.0.0.0.1.1.1
%e .0.1.1.0.0.0.0.0.1.1.0
%e .0.1.0.1.1.0.1.1.0.1.0
%e .0.0.1.1.1.0.1.1.1.0.0
%e .0.0.0.0.1.0.1.0.0.0.0
%K nonn
%O 1,11
%A _R. H. Hardin_, Oct 27 2008