Numbers k that divide sigma(k) - sigma(k-1).

Terms

a(0) =2a(1) =6a(2) =15a(3) =19a(4) =207a(5) =958a(6) =1335a(7) =1365a(8) =1635a(9) =2686a(10) =2975a(11) =3201a(12) =4365a(13) =4536a(14) =8586a(15) =14842a(16) =16120a(17) =18874a(18) =19359a(19) =20146a(20) =24958a(21) =33999a(22) =36567a(23) =42819a(24) =53580a(25) =56565a(26) =64666a(27) =74919a(28) =79827a(29) =79834