Numbers n such that sigma(n) - sigma(n-1) divides n.

Terms

a(0) =2a(1) =3a(2) =5a(3) =6a(4) =10a(5) =19a(6) =52a(7) =118a(8) =1054a(9) =3201a(10) =8586a(11) =9802a(12) =16120a(13) =60556a(14) =140698a(15) =145216a(16) =11273536a(17) =29886160a(18) =44868748a(19) =8748377956a(20) =325377469696