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

Terms

a(0) =17a(1) =43a(2) =73a(3) =107a(4) =149a(5) =181a(6) =227a(7) =263a(8) =307a(9) =349a(10) =389a(11) =433a(12) =467a(13) =521a(14) =571a(15) =613a(16) =653a(17) =701a(18) =751a(19) =809a(20) =853a(21) =887a(22) =947a(23) =997a(24) =1039a(25) =1091a(26) =1129a(27) =1193a(28) =1237a(29) =1291