Palindromic primes using at most two distinct digits.

Terms

a(0) =2a(1) =3a(2) =5a(3) =7a(4) =11a(5) =101a(6) =131a(7) =151a(8) =181a(9) =191a(10) =313a(11) =353a(12) =373a(13) =383a(14) =727a(15) =757a(16) =787a(17) =797a(18) =919a(19) =929a(20) =11311a(21) =11411a(22) =13331a(23) =15551a(24) =16661a(25) =18181a(26) =19991a(27) =32323a(28) =33533a(29) =35353