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 A050517 #6 Mar 30 2012 18:34:53 %S A050517 80640,146880,155520,161280,241920,293760,311040,322560,429120,440640, %T A050517 466560,403200,483840,587520,622080,564480,734400,645120,777600, %U A050517 725760,852480,858240,881280,933120,806400,881280,806400,933120,967680 %N A050517 Value of phi in arithmetic progression of at least 5 terms having the same value of phi in A050515. %Y A050517 Cf. A000010, A050495, A050496, A050497, A050515-A050520. %K A050517 nonn %O A050517 1,1 %A A050517 _Jud McCranie_, Dec 28 1999