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 A050516 #6 Mar 30 2012 18:34:53 %S A050516 210,30,30,420,630,60,60,840,30,90,90,1050,1260,120,120,1470,150,1680, %T A050516 150,1890,30,60,180,180,2100,210,2310,210,2520,240,2730,240,90,2940, %U A050516 270,270,3150,300,3360,300,3570,330,3780,60,330,120,360,3990,360,4200 %N A050516 Increments in arithmetic progression of at least 5 terms having the same value of phi in A050515. %Y A050516 Cf. A000010, A050495, A050496, A050497, A050515-A050520. %K A050516 nonn %O A050516 1,1 %A A050516 _Jud McCranie_, Dec 28 1999