Palindromic composite numbers starting with a digit 3.

Terms

a(0) =33a(1) =303a(2) =323a(3) =333a(4) =343a(5) =363a(6) =393a(7) =3003a(8) =3113a(9) =3223a(10) =3333a(11) =3443a(12) =3553a(13) =3663a(14) =3773a(15) =3883a(16) =3993a(17) =30003a(18) =30303a(19) =30503a(20) =30603a(21) =30903a(22) =31213a(23) =31313a(24) =31413a(25) =31513a(26) =31613a(27) =31713a(28) =31813a(29) =31913