%I #12 Feb 15 2015 02:16:07
%S 1,0,3,978,56630832,813802235250650,4797611106478930201025520,
%T 17327898558894838031017212608777367670,
%U 53493753018329066207577438898229132113128344235601408
%N Number of nonisomorphic groupoids with no idempotents.
%H <a href="/index/Gre#groupoids">Index entries for sequences related to groupoids</a>
%Y Cf. A001329, A038018.
%K nonn
%O 0,3
%A _Christian G. Bower_, Feb 15 1998 and May 15 1998