Odd palindromes.

Terms

a(0) =1a(1) =3a(2) =5a(3) =7a(4) =9a(5) =11a(6) =33a(7) =55a(8) =77a(9) =99a(10) =101a(11) =111a(12) =121a(13) =131a(14) =141a(15) =151a(16) =161a(17) =171a(18) =181a(19) =191a(20) =303a(21) =313a(22) =323a(23) =333a(24) =343a(25) =353a(26) =363a(27) =373a(28) =383a(29) =393