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

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

Offset

1,2

Links

Table of n, a(n) for n=1..10.

Index entries for sequences related to monoids

Formula

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

Crossrefs

Row sums of A058160.

Cf. A058155.

Sequence in context: A011804 A292467 A291622 * A011837 A106343 A086992

Adjacent sequences: A058153 A058154 A058155 * A058157 A058158 A058159

Keyword

nonn,more

Author

Christian G. Bower, Nov 14 2000

Extensions

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

a(10) from Andrew Howroyd, Feb 15 2022

Status

approved