A058135 Number of asymmetric self-converse monoids (semigroups with identity) of order n.

1, 2, 4, 13, 54, 322, 2545

Offset

1,2

Links

Table of n, a(n) for n=1..7.

Index entries for sequences related to monoids

Crossrefs

a(n)=A058136(n)*2-A058130(n).

Sequence in context: A030886 A030810 A346550 * A030968 A030862 A030923

Adjacent sequences: A058132 A058133 A058134 * A058136 A058137 A058138

Keyword

nonn,more

Author

Christian G. Bower, Nov 13 2000

Status

approved