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 A309163 #9 Jul 27 2019 11:20:19 %S A309163 0,0,0,0,0,1,0,0,0,1,0,0,0,0,0,0,1,1,1,0,1,1,0,0,0,1,0,0,1,0,1,0,1,0, %T A309163 1,1,0,0,0,0,1,0,0,0,1,1,1,0,0,0,0,1,0,0,1,1,1,1,1,1,0,1,0,0,0,0,1,0, %U A309163 0,0,0,0,0,0,1,1,0,0,0,0,0,1,0,1,1,0,1,2,0,1,1,1 %N A309163 Rank of elliptic curve y^2 = x * (x+1) * (x-n). %H A309163 Seiichi Manyama, <a href="/A309163/b309163.txt">Table of n, a(n) for n = 1..1000</a> %o A309163 (PARI) {a(n) = ellanalyticrank(ellinit([0, -n+1, 0, -n, 0]))[1]} %Y A309163 Cf. A309162, A309165. %K A309163 nonn %O A309163 1,88 %A A309163 _Seiichi Manyama_, Jul 15 2019