Numbers whose base-5 representation has the same number of 0's and 2's.

Terms

a(0) =1a(1) =3a(2) =4a(3) =6a(4) =8a(5) =9a(6) =10a(7) =16a(8) =18a(9) =19a(10) =21a(11) =23a(12) =24a(13) =27a(14) =31a(15) =33a(16) =34a(17) =35a(18) =41a(19) =43a(20) =44a(21) =46a(22) =48a(23) =49a(24) =51a(25) =53a(26) =54a(27) =55a(28) =65a(29) =70