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 A132590 #8 Oct 08 2020 18:49:34 %S A132590 1,6,466,10614362 %N A132590 Number of Abelian hypergroups of order n. %D A132590 R. Bayon and N. Lygeros, Les hypergroupes d'ordre 3, Italian Journal of Pure and Applied Mathematics, Vol. 20 (2006), pp. 223-236. %D A132590 R. Bayon and N. Lygeros, Les hypergroupes abeliens d'ordre 4, Structure elements of hyper-structures, Spanidis, Xanthi (2006),pp. 35-39. %H A132590 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. %H A132590 Mahdeyeh Iranmanesh, Morteza Jafarpour, Hossien Aghabozorgi, Jian Ming Zhan, <a href="https://doi.org/10.1007/s10114-020-8282-z">Classification of Krasner Hyperfields of Order 4</a>, Acta Mathematica Sinica, English Series (2020) Vol. 36, No. 8, 889-902. %Y A132590 Cf. A108089. %K A132590 hard,nonn %O A132590 1,2 %A A132590 Roman Bayon (roman.bayon(AT)gmail.com), Aug 28 2007