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%I #12 Jul 13 2013 11:50:12
%S 2,3,5,6,10,19,52,118,1054,3201,8586,9802,16120,60556,140698,145216,
%T 11273536,29886160,44868748,8748377956,325377469696,2368739714188
%N Numbers n such that sigma(n) - sigma(n-1) divides n.
%C a(23) > 2.5*10^12. - _Giovanni Resta_, Jul 13 2013
%Y Cf. A053222, A067816, A223138, A225211.
%K nonn,more
%O 1,1
%A _Alex Ratushnyak_, Jul 05 2013
%E a(21)-a(22) from _Giovanni Resta_, Jul 13 2013
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