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A057996 Number of self-converse loops (quasigroups with an identity element) of order n. 7
1, 1, 1, 2, 4, 35, 556, 64065 (list; graph; refs; listen; history; internal format)
OFFSET

0,4

COMMENTS

x*y is ismorphic to y*x.

LINKS

Index entries for sequences related to quasigroups

CROSSREFS

Cf. A057991-A057994, A057771, A057998.

Sequence in context: A006989 A132529 A140984 * A009090 A009295 A199495

Adjacent sequences:  A057993 A057994 A057995 * A057997 A057998 A057999

KEYWORD

nonn,more,nice

AUTHOR

Christian G. Bower (bowerc(AT)usa.net), Nov 01 2000

EXTENSIONS

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

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Last modified February 17 19:13 EST 2012. Contains 206085 sequences.