A057996 Number of self-converse loops (quasigroups with an identity element) of order n.

0, 1, 1, 1, 2, 4, 35, 556, 64065

Offset: 0

Author

Christian G. Bower, Nov 01 2000

Keywords

• nonn
• more
• nice

Comments

x*y is isomorphic to y*x.

Links

• Index entries for sequences related to quasigroups

Crossrefs

Cf. A057991, A057992, A057993, A057994, A057771, A057998.

Extensions

a(8) from Juergen Buntrock (jubu(AT)eule.in-berlin.de), Nov 17 2003

Offset corrected and a(0) prepended by Jianing Song, Oct 26 2019