A058135 - OEIS

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A058135

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

3

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

(list; graph; refs; listen; history; text; internal format)

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