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%I #7 Jan 05 2013 08:40:29
%S 1,8,161,3771,65536,968434,13398995,190804729,2840301338
%N Half the number of n X n binary matrices differing in at most two positions between adjacent rows and at most two positions between adjacent columns.
%K nonn
%O 1,2
%A _R. H. Hardin_, May 28 2008
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