Numbers k such that 8k - 1 is prime.

Terms

a(0) =1a(1) =3a(2) =4a(3) =6a(4) =9a(5) =10a(6) =13a(7) =16a(8) =19a(9) =21a(10) =24a(11) =25a(12) =28a(13) =30a(14) =33a(15) =34a(16) =39a(17) =45a(18) =46a(19) =48a(20) =54a(21) =55a(22) =58a(23) =60a(24) =61a(25) =63a(26) =75a(27) =76a(28) =79a(29) =81