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A058171 Number of quasigroups of order n, considered to be equivalent when they are isomorphic or anti-isomorphic (by reversal of the operator). 0
1, 1, 1, 4, 24, 746, 567207 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,4

LINKS

Table of n, a(n) for n=0..6.

Index entries for sequences related to quasigroups

CROSSREFS

a(n)=(A057991(n)+A057993)/2.

Sequence in context: A174245 A228191 A012989 * A196866 A223005 A009043

Adjacent sequences:  A058168 A058169 A058170 * A058172 A058173 A058174

KEYWORD

nonn,more

AUTHOR

Christian G. Bower, Nov 20 2000

STATUS

approved

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Last modified February 20 22:51 EST 2019. Contains 320362 sequences. (Running on oeis4.)