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%I #3 Mar 31 2012 12:35:07
%S 1,2,3,10,20,98,307,2200,11253,122274,1039587,17865284,256702931,
%T 7235318376,178530216764,8498781072612,365328452613008,
%U 30052220838642600
%N Number of n X n binary matrices, symmetric about both diagonal and antidiagonal, with rows, considered as binary numbers, in strictly increasing order.
%K nonn
%O 2,2
%A _R. H. Hardin_, Jul 31 2008
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