a(n) = prime(9*n-7).

Terms

a(0) =3a(1) =31a(2) =71a(3) =109a(4) =163a(5) =211a(6) =263a(7) =313a(8) =373a(9) =431a(10) =479a(11) =547a(12) =601a(13) =653a(14) =719a(15) =773a(16) =839a(17) =907a(18) =971a(19) =1031a(20) =1091a(21) =1153a(22) =1223a(23) =1289a(24) =1361a(25) =1433a(26) =1487a(27) =1553a(28) =1609a(29) =1669