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 A218413 #18 May 13 2023 17:30:34 %S A218413 168,11172,217854,228480,446880,220093440,5228496000,10805558400, %T A218413 14091504577920,583455456460800,2583890834482298880, %U A218413 5510058011880428160,224050000769667072000,1022756201136515973120,1314073124731389718080,2661277331943365990400 %N A218413 Numbers k for which sigma(k)/k - 6/7 is an integer. %C A218413 a(9) > 10^11. - _Donovan Johnson_, Oct 31 2012 %C A218413 a(9) > 10^12. - _Giovanni Resta_, Nov 04 2012 %C A218413 Note that there are no terms with abundancy 13/7. - _Michel Marcus_, Jun 25 2013 %Y A218413 Cf. A218428, A218409, A218410, A218411, A218412. %K A218413 nonn %O A218413 1,1 %A A218413 _Zdenek Cervenka_, Oct 28 2012 %E A218413 a(6)-a(8) from _Donovan Johnson_, Oct 31 2012 %E A218413 More terms from _Michel Marcus_, Jun 25 2013