a(n) = prime(8*n - 6).

Terms

a(0) =3a(1) =29a(2) =61a(3) =101a(4) =139a(5) =181a(6) =229a(7) =271a(8) =317a(9) =373a(10) =421a(11) =463a(12) =521a(13) =577a(14) =619a(15) =673a(16) =733a(17) =787a(18) =839a(19) =887a(20) =953a(21) =1013a(22) =1061a(23) =1109a(24) =1181a(25) =1231a(26) =1291a(27) =1361a(28) =1429a(29) =1481