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 A020937 #4 Mar 30 2012 18:55:50 %S A020937 6,8,11,15,21,24,30,32,37,46,47,55,61,62,66,73,80,82,91,94,97,101,106, %T A020937 114,123,126,128,132,135,138,154,156,162,164,175,177,184,189,192,197, %U A020937 204,205,217,217,220,221,233,246,250,252,258,263,263,273,278,282,289 %N A020937 Greatest k such that (k-th prime) < (7 times n-th prime). %Y A020937 Cf. A020900, A020901, A020934-A020940. %K A020937 nonn %O A020937 1,1 %A A020937 _Clark Kimberling_ %E A020937 More terms from _Henry Bottomley_, Nov 13 2000