Primes of the form XYX, where Y is a single digit.

Terms

a(0) =101a(1) =131a(2) =151a(3) =181a(4) =191a(5) =313a(6) =353a(7) =373a(8) =383a(9) =727a(10) =757a(11) =787a(12) =797a(13) =919a(14) =929a(15) =11311a(16) =11411a(17) =13313a(18) =13513a(19) =13613a(20) =13913a(21) =17117a(22) =17317a(23) =17417a(24) =19219a(25) =19319a(26) =19819a(27) =19919a(28) =21121a(29) =21221