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A234845 Number of commutative inverse monoids of order n. 3


%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

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Last modified September 27 20:35 EDT 2020. Contains 337388 sequences. (Running on oeis4.)