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 A357867 #5 Oct 21 2022 10:04:05 %S A357867 12,15,25,28,30,39 %N A357867 Numbers k such that A334499(k) is not divisible by k. %Y A357867 Cf. A334499, A334500. %K A357867 nonn,more %O A357867 1,1 %A A357867 _Pontus von Brömssen_, Oct 17 2022