A057996 - OEIS

A057996

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

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

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

OFFSET

0,5

COMMENTS

x*y is isomorphic to y*x.

LINKS

CROSSREFS

KEYWORD

nonn,more,nice

AUTHOR

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

STATUS

approved