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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 12:35:16
%S 1,1,1,1,1,1,3,19,37,71,177,551,1807,6509,26627,139987,688205,4186827,
%T 24218141,169157335,1233973193
%N Number of n X n binary arrays symmetric under 90 degree rotation with all ones connected only in a 1101-0111-0001 pattern in any orientation.
%e Maximal 8 X 8 example
%e .0.0.0.1.0.1.1.0
%e .1.0.0.1.1.1.0.0
%e .1.1.0.1.0.0.0.0
%e .0.1.0.0.0.1.1.1
%e .1.1.1.0.0.0.1.0
%e .0.0.0.0.1.0.1.1
%e .0.0.1.1.1.0.0.1
%e .0.1.1.0.1.0.0.0
%K nonn
%O 1,7
%A _R. H. Hardin_, Nov 04 2008