Numbers k such that (2^k - 1) * k! + 1 is prime.

Terms

a(0) =1a(1) =2a(2) =3a(3) =6a(4) =17a(5) =25a(6) =40a(7) =45a(8) =143a(9) =289a(10) =510a(11) =524a(12) =526a(13) =716a(14) =756a(15) =1008a(16) =1271a(17) =1370a(18) =3677a(19) =7963a(20) =9053