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 A304045 #4 May 05 2018 12:40:18 %S A304045 1,4,27,220,581,596,691,3944,14082,35195,80652,144032 %N A304045 Numbers k such that A000712(k) is divisible by k. %C A304045 No other terms below 500000. %e A304045 27 is in the sequence because A000712(27) = 240840 = 8920 * 27. %Y A304045 Cf. A000712. %K A304045 nonn,more %O A304045 1,2 %A A304045 _Vaclav Kotesovec_, May 05 2018