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 A033857 #14 Apr 17 2022 19:52:34 %S A033857 35,44,56,105,198,418,1254 %N A033857 Numbers n such that j(n)*phi(n) = usigma(n), where j(n) = A033831, usigma(n) = sum of unitary divisors of n (A034448). %C A033857 If it exists, a(8) > 10^9. - _Sean A. Irvine_, Jul 20 2020 %Y A033857 Cf. A000010 (phi), A034448 (usigma), A033831. %K A033857 nonn,more %O A033857 1,1 %A A033857 _Naohiro Nomoto_