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 A309029 #23 Jul 12 2019 09:10:52 %S A309029 1,2,17,82,5037,49042 %N A309029 Smallest k>0 such that the elliptic curve y^2 = x^3 - k*x has rank n, if k exists. %C A309029 See A309028 for the smallest positive k. %H A309029 B. J. Birch and H. P. F. Swinnerton-Dyer, <a href="https://eudml.org/doc/150565">Notes on elliptic curves, I</a>, J. Reine Angew. Math., 212 (1963), 7-25. %Y A309029 Cf. A031508, A060952, A194687, A309028. %Y A309029 Cf. A002156, A002157, A309032, A309033, A309034, A309100. %K A309029 nonn,more,hard %O A309029 0,2 %A A309029 _Seiichi Manyama_, Jul 08 2019 %E A309029 a(5) from _Vaclav Kotesovec_, Jul 09 2019