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%I
%S 2,5,17,69,309,1668,10056,66792,487097,3831282,32364784,291650388,
%T 2787435921,28151860269,299220983205,3336621374511,38927257377509
%N Number of nXn symmetric binary arrays with rows, considered as binary numbers, in nondecreasing order, and no more than 3 ones in any row
%K nonn
%O 1,1
%A _R. H. Hardin_ Jun 25 2009
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