Positive numbers having the same set of digits in base 4 and base 10.

Terms

a(0) =1a(1) =2a(2) =3a(3) =13a(4) =31a(5) =123a(6) =203a(7) =231a(8) =1031a(9) =1103a(10) =1120a(11) =1203a(12) =1230a(13) =1303a(14) =2103a(15) =2120a(16) =2201a(17) =2300a(18) =2301a(19) =2302a(20) =2303a(21) =3012a(22) =3020a(23) =3021a(24) =3022a(25) =3023a(26) =3100a(27) =3101a(28) =3102a(29) =3103