%I
%S 1,2,4,11,27,87,300,1259,5988,32812,202784,1400541,10669344,88761928,
%T 799112310
%N Number of commutative inverse monoids of order n.
%H Martin E. Malandro, <a href="http://arxiv.org/abs/1312.7192">Enumeration of finite inverse semigroups</a>, arXiv:1312.7192 [math.CO]
%Y Cf. A001428 (inverse semigroups), A234843 (commutative inverse semigroups), A234844 (inverse monoids).
%K nonn,hard,more
%O 1,2
%A _Joerg Arndt_, Dec 31 2013
