A058121 Number of self-converse semigroups of order n with 3 idempotents.

2, 16, 112, 764, 5567

Offset

3,1

Links

Table of n, a(n) for n=3..7.

Index entries for sequences related to semigroups

Crossrefs

Column 3 of A058118.

Sequence in context: A359758 A370245 A370270 * A117627 A117628 A288971

Adjacent sequences: A058118 A058119 A058120 * A058122 A058123 A058124

Keyword

nonn,hard

Author

Christian G. Bower, Nov 10 2000

Status

approved