a(n) = prime(7*n - 6).

Terms

a(0) =2a(1) =19a(2) =47a(3) =79a(4) =109a(5) =151a(6) =191a(7) =229a(8) =269a(9) =311a(10) =353a(11) =397a(12) =439a(13) =479a(14) =523a(15) =577a(16) =617a(17) =659a(18) =709a(19) =757a(20) =811a(21) =857a(22) =907a(23) =953a(24) =1009a(25) =1049a(26) =1093a(27) =1151a(28) =1201a(29) =1249