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%I
%S 1,1,1,1,1,9,19,37,135,441,1879,9853,53945,336895,2463469,20551403,
%T 200816385,2276422523,29317863291,437152357559,7466970790985,
%U 147328291419831,3346732661121193
%N Number of n X n binary arrays symmetric under 90-degree rotation with all ones connected only in a zee 1,1 1,2 2,2 2,3 in any orientation.
%e Maximal 8 X 8 example:
%e 0 1 0 0 0 1 1 0
%e 1 1 0 1 1 0 1 1
%e 1 0 1 0 1 1 0 0
%e 0 1 1 0 0 0 1 0
%e 0 1 0 0 0 1 1 0
%e 0 0 1 1 0 1 0 1
%e 1 1 0 1 1 0 1 1
%e 0 1 1 0 0 0 1 0
%K nonn
%O 1,6
%A _R. H. Hardin_, Oct 25 2008
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