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 A200657 #18 May 09 2025 10:43:57 %S A200657 85580,154396,240004,476425,767125,1235168,1920032,2555956,5518439 %N A200657 Successive values y such that Mordell elliptic curve x^3 - y^2 = d has a quadratic extension over rationals. %C A200657 For x values see A200656. %C A200657 For d values see A200658. %C A200657 Definition: Secondary terms occurred when existed such integer k that A200656 is divisible by k^2 and A200657 is divisible by k^3 and A200658 is divisible by k^6. %C A200657 Terms free of such k are primary terms. %C A200657 Secondary terms are: a(6)=a(2)*2^3, a(7)=a(3)*2^3. %C A200657 A200217 is subset of this sequence. %Y A200657 Cf. A200217, A200656, A200658. %K A200657 nonn,more %O A200657 1,1 %A A200657 _Artur Jasinski_, Nov 20 2011