%I #4 Dec 18 2015 18:17:22
%S 2,8,58,926,28689,1605029,143303526,18742331821,3381674439844
%N Number of n X n binary arrays with rows and columns, considered as graycode numbers, in nondecreasing order, and no more than 4 ones in any row or column
%K nonn
%O 1,1
%A _R. H. Hardin_ Jun 25 2009
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