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 A218428 #28 May 15 2023 12:14:30 %S A218428 7,56,3724,333312,939466752,88884432000,95088913920,183694492800, %T A218428 85621850496000,120354474240000,176951824358400,239555577824640, %U A218428 268015772344320,2056513874688000,9918742759833600,93442741956748800,149180517860774400,230762478968017920 %N A218428 Numbers k for which sigma(k)/k - 1/7 is an integer. %C A218428 a(8) > 10^11. - _Donovan Johnson_, Oct 31 2012 %C A218428 a(9) > 10^12. - _Giovanni Resta_, Nov 04 2012 %C A218428 Note that there are no terms here with abundancy 29/7. - _Michel Marcus_, Jun 25 2013 %Y A218428 Cf. A218409, A218410, A218411, A218412, A218413. %K A218428 nonn %O A218428 1,1 %A A218428 _Zdenek Cervenka_, Oct 28 2012 %E A218428 a(5)-a(7) from _Donovan Johnson_, Oct 31 2012 %E A218428 a(8) from _Giovanni Resta_, Nov 04 2012 %E A218428 More terms from _Michel Marcus_, Jun 25 2013