%I #2 Mar 31 2012 10:31:22
%S 1,1,2,3,7,9,16,22,42,57,90,124,204,275,413,562,866,1161,1685,2264,
%T 3308,4407
%N Number of groupoids (categories all of whose morphisms are invertible) with n morphisms.
%C Row sums of A140188 (see comments and formula there).
%Y Cf. A140185, A140188.
%K nonn
%O 0,3
%A _Benoit Jubin_, May 12 2008