Search: id:A057991
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%I A057991
%S A057991 1,1,1,5,35,1411,1130531,12198455835,2697818331680661,
%T A057991 15224734061438247321497,2750892211809150446995735533513,19464657391668924966791023043937578299025
%N A057991 Number of quasigroups of order n.
%D A057991 A. Hulpke, P. Kaski and P. R. J. Ostergard, The number of Latin squares 
               of order 11, Preprint, 2009.
%H A057991 <a href="Sindx_Qua.html#quasigroups">Index entries for sequences related 
               to quasigroups</a>
%H A057991 B. D. McKay, A. Meynert and W. Myrvold, <a href="http://cs.anu.edu.au/
               ~bdm/papers/ls_final.pdf">Small Latin Squares, Quasigroups and Loops</
               a>, J. Combin. Designs, to appear (2005).
%Y A057991 Cf. A002860, A057992-A057994, A057771, A057996.
%Y A057991 Sequence in context: A053420 A001802 A122590 this_sequence A099137 A000871 
               A035416
%Y A057991 Adjacent sequences: A057988 A057989 A057990 this_sequence A057992 A057993 
               A057994
%K A057991 nonn,more
%O A057991 0,4
%A A057991 Christian G. Bower (bowerc(AT)usa.net), Nov 01 2000
%E A057991 More terms (from the McKay-Meynert-Myrvold article) from Richard Bean 
               (rwb(AT)eskimo.com), Feb 17 2004
%E A057991 There are 19464657391668924966791023043937578299025 isomorphism classes 
               of quasigroups of order 11. - Petteri Kaski (petteri.kaski(AT)cs.helsinki.fi), 
               Sep 18 2009

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