a(n) = prime(10*n - 6).

Terms

a(0) =7a(1) =43a(2) =89a(3) =139a(4) =193a(5) =251a(6) =311a(7) =373a(8) =433a(9) =491a(10) =569a(11) =619a(12) =683a(13) =757a(14) =827a(15) =887a(16) =971a(17) =1033a(18) =1097a(19) =1181a(20) =1249a(21) =1307a(22) =1423a(23) =1481a(24) =1549a(25) =1609a(26) =1693a(27) =1759a(28) =1861a(29) =1931