Numbers k such that 439*2^k+1 is prime.

Terms

a(0) =6a(1) =18a(2) =34a(3) =54a(4) =58a(5) =454a(6) =538a(7) =994a(8) =1122a(9) =3222a(10) =6582a(11) =8886a(12) =14974a(13) =53014a(14) =127086a(15) =499662a(16) =1112314a(17) =1288818a(18) =1408326a(19) =3318318a(20) =3773958