Numbers k such that phi(k) | sigma(k + 11).

Terms

a(0) =1a(1) =2a(2) =3a(3) =4a(4) =6a(5) =8a(6) =9a(7) =10a(8) =12a(9) =13a(10) =16a(11) =18a(12) =19a(13) =20a(14) =24a(15) =35a(16) =36a(17) =45a(18) =49a(19) =51a(20) =74a(21) =77a(22) =79a(23) =84a(24) =91a(25) =104a(26) =108a(27) =113a(28) =124a(29) =129