A058107 Number of asymmetric semigroups of order n, considered to be equivalent when they are isomorphic or anti-isomorphic (by reversal of the operator).

1, 1, 3, 12, 78, 746, 10965, 746277

Offset: 0

Author

Christian G. Bower, Nov 09 2000

Keywords

• nonn
• hard

Links

• Index entries for sequences related to semigroups

Crossrefs

Cf. A001423.

Extensions

Updated Feb 19 2001