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 A143511 #2 Mar 30 2012 17:22:50 %S A143511 33817088,67634176,101451264,135268352,169085440,202902528,236719616, %T A143511 270536704,8589934592 %N A143511 Least number k such that phi(k) = n, where n runs through the values in A143510. %D A143511 See A143510. %Y A143511 Cf. A002181 (least k such that phi(k)=n). %K A143511 more,nonn %O A143511 1,1 %A A143511 _T. D. Noe_, Aug 21 2008