Numbers k such that 255*2^k-1 is prime.

Terms

a(0) =1a(1) =2a(2) =3a(3) =4a(4) =6a(5) =11a(6) =12a(7) =24a(8) =40a(9) =41a(10) =61a(11) =75a(12) =86a(13) =95a(14) =158a(15) =207a(16) =223a(17) =242a(18) =276a(19) =338a(20) =390a(21) =488a(22) =673a(23) =804a(24) =1084a(25) =1332a(26) =1467a(27) =1588a(28) =2894a(29) =3650