Number of labeled totally ordered commutative semigroups.

A346414

Number of labeled totally ordered commutative semigroups.

Terms

    a(0) =1a(1) =1a(2) =4a(3) =20a(4) =114a(5) =710a(6) =4726a(7) =33157a(8) =243048a(9) =1850817a(10) =14590692

External references