Base-4 palindromes that start with 1.

Terms

a(0) =1a(1) =5a(2) =17a(3) =21a(4) =25a(5) =29a(6) =65a(7) =85a(8) =105a(9) =125a(10) =257a(11) =273a(12) =289a(13) =305a(14) =325a(15) =341a(16) =357a(17) =373a(18) =393a(19) =409a(20) =425a(21) =441a(22) =461a(23) =477a(24) =493a(25) =509a(26) =1025a(27) =1105a(28) =1185a(29) =1265