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 A069719 #10 Aug 29 2019 05:26:16 %S A069719 2,2,2,2,3,2,2,2,3,3,3,2,3,3,3,2,2,3,3,2,2,3,3,4,2,3,2,2,3,4,2,2,3,3, %T A069719 3,2,2,3,4,3,2,3,3,2,3,2,2,2,2,2,3,2,2,2,2,4,2,3,3,2,2,2,4,2,2,2,3,3 %N A069719 Integer quotients arising in A068418: sum of proper divisors is divided by cototient of terms of A068418. %F A069719 a(n) = A001065(A068418(n)) - A051953(A068418(n)). %e A069719 n=39: m=A068418(39)=130141440, sigma[m]-m=405550080, m-Phi[m]=101387520, quotient=4=a(39). %Y A069719 Cf. A068418, A001065, A000203, A051953, A068414, A069714, A069737. %K A069719 nonn,more %O A069719 1,1 %A A069719 _Labos Elemer_, Apr 05 2002 %E A069719 a(47)-a(68) from _Donovan Johnson_, May 27 2011