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 A218412 #18 May 13 2023 17:12:58 %S A218412 14,588,2520,11466,167580,10999296,67858560,132723360,8644446720, %T A218412 31002402816,65367751680,10941315840000,13980221805312,24365070213120, %U A218412 225855341712000,317483934427296,901703887257600,1550629681348608,8494794723340800 %N A218412 Numbers k for which sigma(k)/k - 5/7 is an integer. %C A218412 a(12) > 10^11. - _Donovan Johnson_, Oct 31 2012 %C A218412 a(12) > 10^12. - _Giovanni Resta_, Nov 04 2012 %Y A218412 Cf. A218428, A218409, A218410, A218411, A218413. %K A218412 nonn %O A218412 1,1 %A A218412 _Zdenek Cervenka_, Oct 28 2012 %E A218412 a(6)-a(11) from _Donovan Johnson_, Oct 31 2012 %E A218412 More terms from _Michel Marcus_, Jun 25 2013