Numbers k such that 181*2^k+1 is prime.

Terms

a(0) =4a(1) =8a(2) =32a(3) =200a(4) =272a(5) =416a(6) =484a(7) =788a(8) =3560a(9) =6628a(10) =44392a(11) =64264a(12) =75832a(13) =80440a(14) =94112a(15) =315104a(16) =359404a(17) =428576a(18) =608192a(19) =1209572a(20) =5057960