%I #4 Mar 31 2012 12:35:16
%S 1,1,1,1,1,1,4,9,18,29,62,159,552,1625,6033,18370,76478,293679,
%T 1560810,7445670,46344151,251751509,1816985360,11749000262
%N Number of n X n binary arrays symmetric under 90 degree rotation with all ones connected only in a 11011-01110 pattern in any orientation.
%e Maximal 8 X 8 example
%e .0.0.0.0.0.1.0.0
%e .0.1.1.1.0.1.1.0
%e .1.1.0.1.1.0.1.0
%e .0.0.1.0.0.1.1.0
%e .0.1.1.0.0.1.0.0
%e .0.1.0.1.1.0.1.1
%e .0.1.1.0.1.1.1.0
%e .0.0.1.0.0.0.0.0
%K nonn
%O 1,7
%A _R. H. Hardin_, Nov 04 2008