Numbers k such that 141*2^k+1 is prime.

Terms

a(0) =1a(1) =3a(2) =5a(3) =7a(4) =8a(5) =12a(6) =15a(7) =20a(8) =31a(9) =33a(10) =37a(11) =41a(12) =61a(13) =65a(14) =91a(15) =93a(16) =103a(17) =117a(18) =133a(19) =137a(20) =141a(21) =160a(22) =291a(23) =303a(24) =343a(25) =488a(26) =535a(27) =555a(28) =556a(29) =640