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A057996 Number of self-converse loops (quasigroups with an identity element) of order n. 8
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
Sequence in context: A027681 A348094 A140984 * A009090 A009295 A277091
KEYWORD
nonn,more,nice
AUTHOR
Christian G. Bower, Nov 01 2000
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

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Last modified March 28 10:31 EDT 2024. Contains 371240 sequences. (Running on oeis4.)