Numbers whose base-3 and base-9 expansions have no digits in common.

Terms

a(0) =3a(1) =4a(2) =5a(3) =6a(4) =7a(5) =8a(6) =30a(7) =31a(8) =32a(9) =33a(10) =34a(11) =35a(12) =39a(13) =40a(14) =41a(15) =42a(16) =43a(17) =44a(18) =48a(19) =49a(20) =50a(21) =51a(22) =52a(23) =53a(24) =57a(25) =58a(26) =59a(27) =60a(28) =61a(29) =62