%I #10 Dec 19 2015 09:51:04
%S 1,0,1,1,2,1,35,51,27,3,13776,18330,9152,2016,164,83306272,104124850,
%T 52056277,13006746,1622527,80461
%N Triangle: T(n,k), k<=n: commutative groupoids with no symmetry with n elements and k idempotents.
%H <a href="/index/Gre#groupoids">Index entries for sequences related to groupoids</a>
%Y Cf. A001329, A001425, A030258, A030261, A030264.
%K nonn,tabl,more
%O 0,5
%A _Christian G. Bower_, May 15 1998