Reminder: The OEIS is hiring a new managing editor, and the application deadline is January 26.
%I #4 Mar 31 2012 12:35:10
%S 1,1,1,9,33,185,1861,35285,845657,28275879,1543673839,135800422841,
%T 17596518150277
%N Number of n X n binary arrays with all ones connected only in a 1100-0110-0011 pattern in any orientation.
%e Maximal 8 X 8 example
%e .0.0.1.0.0.1.1.0
%e .0.1.1.0.1.1.0.1
%e .1.1.0.1.1.0.1.1
%e .1.0.1.0.0.1.1.0
%e .0.1.1.0.0.1.0.0
%e .1.1.0.1.1.0.1.1
%e .1.0.1.1.0.1.1.0
%e .0.1.1.0.1.1.0.0
%K nonn
%O 1,4
%A _R. H. Hardin_