Search: id:A057771
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%I A057771
%S A057771 1,1,1,2,6,109,23746,106228849,9365022303540,20890436195945769617,1478157455158044452849321016
%N A057771 Number of loops (quasigroups with an identity element) of order n.
%D A057771 A. Hulpke, P. Kaski and P. R. J. Ostergard, The number of Latin squares 
               of order 11, Preprint, 2009.
%H A057771 <a href="Sindx_Qua.html#quasigroups">Index entries for sequences related 
               to quasigroups</a>
%H A057771 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 A057771 Cf. A000315, A057991-A057994, A057996, A057995, A089925.
%Y A057771 Sequence in context: A054247 A099790 A059088 this_sequence A056164 A156500 
               A075391
%Y A057771 Adjacent sequences: A057768 A057769 A057770 this_sequence A057772 A057773 
               A057774
%K A057771 nonn,more,nice
%O A057771 1,4
%A A057771 Christian G. Bower (bowerc(AT)usa.net), Nov 01 2000
%E A057771 a(8) from Juergen Buntrock (jubu(AT)jubu.com), Nov 03 2003.
%E A057771 Two more terms (from the McKay-Meynert-Myrvold article) from Richard 
               Bean (rwb(AT)eskimo.com), Feb 17 2004
%E A057771 There are 1478157455158044452849321016 isomorphism classes of loops of 
               order 11. - Petteri Kaski (petteri.kaski(AT)cs.helsinki.fi), Sep 
               18 2009

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