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 A050515 #6 Mar 30 2012 18:34:53 %S A050515 353640,550860,583200,707280,1060920,1101720,1166400,1414560,1609260, %T A050515 1652580,1749600,1768200,2121840,2203440,2332800,2475480,2754300, %U A050515 2829120,2916000,3182760,3196860,3218520,3305160,3499200,3536400 %N A050515 Arithmetic progression of at least 5 terms having the same value of phi start at these numbers. %Y A050515 Cf. A000010, A050495, A050496, A050497, A050515-A050520. %K A050515 nonn %O A050515 1,1 %A A050515 _Jud McCranie_, Dec 28 1999