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 A304043 #4 May 05 2018 12:01:48 %S A304043 1,2,5,8,28,34,50,529,1082,1888,42000,112230,178219 %N A304043 Numbers k such that A022629(k) is divisible by k. %C A304043 No other terms below 1000000. %e A304043 50 is in the sequence because A022629(50) = 206309050 = 4126181 * 50. %Y A304043 Cf. A022629, A051177, A056848, A304028, A304040. %K A304043 nonn,more %O A304043 1,2 %A A304043 _Vaclav Kotesovec_, May 05 2018