%I #3 Mar 31 2012 12:35:09
%S 1,1,1,1,1,1,3,7,13,21,51,159,577,2001,7625,31703,159573,881761,
%T 5519227,36692597,286423433,2406566921,23662937019,247567053249,
%U 2997634212141,39099498214505,595262340859501,9726061577357237,184962190180592957
%N Number of n X n binary arrays symmetric about both diagonal and antidiagonal with all ones connected only in a 2X3 U in any orientation.
%e Maximal 8 X 8 example
%e .0.0.0.1.1.0.0.0
%e .0.0.0.0.1.0.0.0
%e .0.0.0.1.1.0.0.0
%e .1.0.1.0.0.1.1.1
%e .1.1.1.0.0.1.0.1
%e .0.0.0.1.1.0.0.0
%e .0.0.0.1.0.0.0.0
%e .0.0.0.1.1.0.0.0
%K nonn
%O 1,7
%A _R. H. Hardin_, Oct 26 2008
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