%I #4 Dec 18 2015 18:17:22
%S 2,3,9,41,205,1190,7529,51751,387737,3113542,26765060,244702054,
%T 2367701249,24169612036,259289525510,2915165124175,34258966408875
%N Number of n X n symmetric binary arrays with rows, considered as binary numbers, in strictly increasing order, and no more than 3 ones in any row
%K nonn
%O 1,1
%A _R. H. Hardin_ Jun 25 2009