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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). 1
1, 1, 1, 4, 24, 746, 567207 (list; graph; refs; listen; history; text; internal format)
OFFSET
0,4
LINKS
CROSSREFS
a(n)=(A057991(n)+A057993)/2.
Sequence in context: A228191 A012989 A347480 * A196866 A326794 A223005
KEYWORD
nonn,more
AUTHOR
Christian G. Bower, Nov 20 2000
STATUS
approved

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Last modified May 7 03:31 EDT 2024. Contains 372300 sequences. (Running on oeis4.)