%I #6 Mar 30 2012 17:37:11

%S 1,2,4,13,49,247,1486

%N Number of asymmetric commutative monoids (semigroups with identity) of order n.

%H <a href="/index/Mo#monoids">Index entries for sequences related to monoids</a>

%K nonn,more

%O 1,2

%A _Christian G. Bower_, Nov 13 2000