Numbers n such that 49*2^n-1 is prime.

Terms

a(0) =1a(1) =5a(2) =7a(3) =9a(4) =13a(5) =15a(6) =29a(7) =33a(8) =39a(9) =55a(10) =81a(11) =95a(12) =205a(13) =279a(14) =581a(15) =807a(16) =813a(17) =2551a(18) =2565a(19) =3183a(20) =6661a(21) =11989a(22) =16911a(23) =22605a(24) =30799a(25) =39969a(26) =41167a(27) =43421a(28) =54559a(29) =212745