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 A304046 #4 May 05 2018 12:39:28 %S A304046 1,49,987,1044,7152,7695,9477,20464,21375,56887,115354,163871 %N A304046 Numbers k such that A001156(k) is divisible by k. %C A304046 No other terms below 250000. %e A304046 987 is in the sequence because A001156(987) = 3514989282 = 3561286 * 987. %Y A304046 Cf. A001156. %K A304046 nonn,more %O A304046 1,2 %A A304046 _Vaclav Kotesovec_, May 05 2018