A058156 Number of labeled commutative monoids of order n with a fixed identity.

1, 2, 9, 94, 1486, 38890, 1430442, 77291510, 7826336608, 3904851153672

Offset: 1

Author

Christian G. Bower, Nov 14 2000

Keywords

• nonn
• more

Links

• Index entries for sequences related to monoids

Crossrefs

Row sums of A058160.

Cf. A058155.

Formula

a(n) = A058155(n)/n.

Extensions

a(8)-a(9) from Alex Meiburg, Oct 20 2021

a(10) from Andrew Howroyd, Feb 15 2022