Numbers k such that 3*k + 4 is prime.

Terms

a(0) =1a(1) =3a(2) =5a(3) =9a(4) =11a(5) =13a(6) =19a(7) =21a(8) =23a(9) =25a(10) =31a(11) =33a(12) =35a(13) =41a(14) =45a(15) =49a(16) =51a(17) =53a(18) =59a(19) =63a(20) =65a(21) =69a(22) =73a(23) =75a(24) =79a(25) =89a(26) =91a(27) =93a(28) =101a(29) =103