a(n) = prime(10*n - 1).

Terms

a(0) =23a(1) =67a(2) =109a(3) =167a(4) =227a(5) =277a(6) =347a(7) =401a(8) =461a(9) =523a(10) =599a(11) =653a(12) =727a(13) =797a(14) =859a(15) =937a(16) =1009a(17) =1063a(18) =1129a(19) =1217a(20) =1289a(21) =1367a(22) =1447a(23) =1499a(24) =1579a(25) =1637a(26) =1723a(27) =1801a(28) =1879a(29) =1979