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 A218418 #14 May 13 2023 20:00:28 %S A218418 252,4464,73152,7448760,41713056,48117888,94112928,301953024, %T A218418 975576960,1773584640,10759746816,46351678464,77308821504, %U A218418 103448378880,196718837760,233400061440,409698051840,939767546880 %N A218418 Numbers k for which sigma(k)/k - 8/9 is an integer. %C A218418 a(14) > 10^11. - _Donovan Johnson_, Nov 01 2012 %C A218418 a(19) > 10^12. - _Giovanni Resta_, Nov 04 2012 %Y A218418 Cf. A218414, A218430, A160320, A218415, A218416, A160321, A218417. %K A218418 nonn %O A218418 1,1 %A A218418 _Zdenek Cervenka_, Oct 28 2012 %E A218418 a(5)-a(13) from _Donovan Johnson_, Nov 01 2012 %E A218418 a(14)-a(18) from _Giovanni Resta_, Nov 04 2012