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 A260990 #16 Mar 22 2025 13:16:05 %S A260990 22,26,28,30,33,34,35,37,38,39,40,42,43,44,45,48,50,51,53,54,55,56,60, %T A260990 61,62,63,64,65,69,72,75,79,81,83,89,92,94,95,101,119,131 %N A260990 Numbers n such that the modular curve X_0(n) is bielliptic. %D A260990 J. S. Balakrishnan, B. Mazur, and N. Dogra, Ogg's torsion conjecture: fifty years later, Bull. Amer. Math. Soc., 62:2 (2025), 235-268. %H A260990 Francesc Bars, <a href="http://dx.doi.org/10.1006/jnth.1998.2343">Bielliptic Modular Curves</a>, Journal of Number Theory, 76 (1999), 154-165. %Y A260990 Cf. A260991, A260992, A260993, A260994. %K A260990 nonn,fini,full %O A260990 1,1 %A A260990 _N. J. A. Sloane_, Aug 08 2015, following a suggestion from _Roger L. Bagula_, Jul 22 2015