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%I #3 Mar 31 2012 12:35:08
%S 1,1,1,3,9,16,93,367,2220,13167,126326,1163166,15908600,209043350,
%T 4432902382,88370483688
%N Number of n X n binary arrays symmetric under 180 degree rotation with all ones connected only either four adjacent vertically or four adjacent horizontally.
%K nonn
%O 1,4
%A _R. H. Hardin_, Oct 19 2008
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