Numbers n such that phi(n) + 1 | sigma(n).

Terms

a(0) =6a(1) =8a(2) =30a(3) =36a(4) =44a(5) =156a(6) =696a(7) =944a(8) =2800a(9) =2928a(10) =3600a(11) =6660a(12) =16064a(13) =195456a(14) =260864a(15) =784128a(16) =4189184a(17) =12573696a(18) =201289728a(19) =17179541504a(20) =274876596224a(21) =824631361536