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 A309165 #9 Jul 15 2019 15:38:12
%S A309165 1,6,88,3630
%N A309165 Least k such that the rank of the elliptic curve y^2 = x * (x+1) * (x-k) is n.
%o A309165 (PARI) {a(n) = my(k=1); while(ellanalyticrank(ellinit([0, -k+1, 0, -k, 0]))[1]<>n, k++); k}
%Y A309165 Cf. A309163.
%K A309165 nonn,more
%O A309165 0,2
%A A309165 _Seiichi Manyama_, Jul 15 2019