Numbers k such that 5*k + 4 is prime.

Terms

a(0) =3a(1) =5a(2) =11a(3) =15a(4) =17a(5) =21a(6) =27a(7) =29a(8) =35a(9) =39a(10) =45a(11) =47a(12) =53a(13) =69a(14) =71a(15) =75a(16) =77a(17) =81a(18) =83a(19) =87a(20) =89a(21) =95a(22) =99a(23) =101a(24) =113a(25) =119a(26) =123a(27) =131a(28) =141a(29) =143