Palindromes in base 4 (written in base 10).

Terms

a(0) =0a(1) =1a(2) =2a(3) =3a(4) =5a(5) =10a(6) =15a(7) =17a(8) =21a(9) =25a(10) =29a(11) =34a(12) =38a(13) =42a(14) =46a(15) =51a(16) =55a(17) =59a(18) =63a(19) =65a(20) =85a(21) =105a(22) =125a(23) =130a(24) =150a(25) =170a(26) =190a(27) =195a(28) =215a(29) =235