%I #4 Dec 18 2015 18:17:22
%S 2,3,7,16,41,109,298,858,2533,7773,24438,79079,261961,888335,3078307,
%T 10884541,39246121,144089532,538426333,2045444718,7895980672,
%U 30947906902,123093837504,496552331743,2030469580356
%N Number of n X n symmetric binary arrays with rows, considered as binary numbers, in strictly increasing order, and no more than 2 ones in any row
%K nonn
%O 1,1
%A _R. H. Hardin_ Jun 25 2009