This is a front-end for the Online Encyclopedia of Integer Sequences, made by Christian Perfect. The idea is to provide OEIS entries in non-ancient HTML, and then to think about how they're presented visually. The source code is on GitHub.
%I A057991 #30 Feb 02 2020 21:29:53 %S A057991 1,1,1,5,35,1411,1130531,12198455835,2697818331680661, %T A057991 15224734061438247321497,2750892211809150446995735533513, %U A057991 19464657391668924966791023043937578299025 %N A057991 Number of quasigroups of order n. %H A057991 A. Hulpke, Petteri Kaski and Patric R. J. Östergård, <a href="http://dx.doi.org/10.1090/S0025-5718-2010-02420-2">The number of Latin squares of order 11</a>, Math. Comp. 80 (2011) 1197-1219. %H A057991 Brendan D. McKay, A. Meynert and W. Myrvold, <a href="http://users.cecs.anu.edu.au/~bdm/papers/ls_final.pdf">Small Latin Squares, Quasigroups and Loops</a>, J. Combin. Designs 15 (2007), no. 2, 98-119. %H A057991 D. S. Stones, <a href="https://doi.org/10.1016/j.disc.2010.06.027">The parity of the number of quasigroups</a>, Discr. Math., 310 (2010), 3033-3039. [From _N. J. A. Sloane_, Sep 25 2010] %H A057991 <a href="/index/Qua#quasigroups">Index entries for sequences related to quasigroups</a> %Y A057991 Cf. A002860, A057992, A057993, A057994, A057771, A057996. %K A057991 nonn,more %O A057991 0,4 %A A057991 _Christian G. Bower_, Nov 01 2000 %E A057991 More terms (from the McKay-Meynert-Myrvold article) from _Richard Bean_, Feb 17 2004 %E A057991 a(11) from Petteri Kaski (petteri.kaski(AT)cs.helsinki.fi), Sep 18 2009