Base 10 numbers that are palindromic in bases 2 and 4.

Terms

a(0) =0a(1) =1a(2) =3a(3) =5a(4) =15a(5) =17a(6) =21a(7) =51a(8) =63a(9) =65a(10) =85a(11) =195a(12) =255a(13) =257a(14) =273a(15) =325a(16) =341a(17) =771a(18) =819a(19) =975a(20) =1023a(21) =1025a(22) =1105a(23) =1285a(24) =1365a(25) =3075a(26) =3315a(27) =3855a(28) =4095a(29) =4097