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%I #17 May 13 2023 17:31:35
%S 540,3276,58032,950976,1862190,17660160,3925389312,1005014679552,
%T 16080326885376,17908023591648,43947421401888,92069057203200,
%U 207726054681600,411471933675264,12363050673792000,160893693946908502272,269783631952374398976,467406267507560908800
%N Numbers k for which sigma(k)/k - 1/9 is an integer.
%C a(8) > 10^11. - _Donovan Johnson_, Nov 01 2012
%C a(8) > 10^12. - _Giovanni Resta_, Nov 04 2012
%C Note that there are no terms with abundancy 10/9 (k=1) or 19/9 (k=2). _Michel Marcus_, Jun 25 2013
%Y Cf. A218430, A160320, A218415, A218416, A160321, A218417, A218418.
%K nonn
%O 1,1
%A _Zdenek Cervenka_, Oct 28 2012
%E a(6)-a(7) from _Donovan Johnson_, Nov 01 2012
%E More terms from _Michel Marcus_, Jun 25 2013
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