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 A132591 #3 Sep 02 2015 13:39:37 %S A132591 1,63,33277642 %N A132591 Number of hyperrings of order n. %D A132591 R. Bayon and N. Lygeros, The Hyperrings of Order 3. %D A132591 Th. Vougiouklis, Hyperstructures and their Representations. Hadronic Press, (1994). %D A132591 Th. Vougiouklis, The fundamental relation in hyperrings, the general hyperfield. Fourth INT. Congress on AHA (1990), pp. 203-211. %H A132591 R. Bayon, N. Lygeros, <a href="https://cs.uwaterloo.ca/journals/JIS/VOL11/Bayon/bayon4.html">The hyperrings of order 3</a>, JIS 11 (2008) 08.3.2 %Y A132591 Cf. A108089, A132590. %K A132591 hard,nonn,bref %O A132591 1,2 %A A132591 Roman Bayon (roman.bayon(AT)gmail.com), Aug 28 2007