Numbers n such that prime(n) == -4 (mod n).

Terms

a(0) =1a(1) =3a(2) =5a(3) =7a(4) =9a(5) =67a(6) =441a(7) =2615a(8) =637237a(9) =637329a(10) =4124703a(11) =27067119a(12) =179993017a(13) =1208198617a(14) =8179002101a(15) =55762149071a(16) =55762149091