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