A057996 - OEIS

%I #20 Feb 11 2020 00:42:21

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

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

%C x*y is isomorphic to y*x.

%H <a href="/index/Qua#quasigroups">Index entries for sequences related to quasigroups</a>

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

%K nonn,more,nice

%O 0,5

%A _Christian G. Bower_, Nov 01 2000

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

%E Offset corrected and a(0) prepended by _Jianing Song_, Oct 26 2019