a(n) = prime(9*n - 5).

Terms

a(0) =7a(1) =41a(2) =79a(3) =127a(4) =173a(5) =227a(6) =271a(7) =331a(8) =383a(9) =439a(10) =491a(11) =563a(12) =613a(13) =661a(14) =733a(15) =797a(16) =857a(17) =919a(18) =983a(19) =1039a(20) =1097a(21) =1171a(22) =1231a(23) =1297a(24) =1373a(25) =1447a(26) =1493a(27) =1567a(28) =1619a(29) =1697