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 A037221 #12 Mar 04 2020 22:56:15 %S A037221 3,5,12,10,60,24,135,222,329,139,1749,454,2716,3817 %N A037221 Number of near-rings (or nearrings) definable on cyclic group of order n. %H A037221 W. E. Clark and J. Pedersen, <a href="http://www.math.usf.edu/~eclark/algctlg/">Catalogue of Algebraic Systems</a> %H A037221 C. Noebauer, <a href="https://web.archive.org/web/20080111141811/http://www.algebra.uni-linz.ac.at/~noebsi/">Home page</a> [Archived copy as of 2008 from web.archive.org] %H A037221 C. Noebauer, <a href="ftp://www.algebra.uni-linz.ac.at/pub/noebauer/smallrings.ps.gz">The Numbers of Small Rings</a> %H A037221 C. Noebauer, <a href="ftp://www.algebra.uni-linz.ac.at/pub/noebauer/thesis.ps.gz">Thesis on the enumeration of near-rings</a> %Y A037221 Cf. A027623, A037291. %K A037221 nonn,nice %O A037221 2,1 %A A037221 _N. J. A. Sloane_ %E A037221 Corrected by Christof Noebauer (christof.noebauer(AT)algebra.uni-linz.ac.at), Sep 29 2000