Numbers whose base-6 representation has the same number of 2's and 4's.

Terms

a(0) =0a(1) =1a(2) =3a(3) =5a(4) =6a(5) =7a(6) =9a(7) =11a(8) =16a(9) =18a(10) =19a(11) =21a(12) =23a(13) =26a(14) =30a(15) =31a(16) =33a(17) =35a(18) =36a(19) =37a(20) =39a(21) =41a(22) =42a(23) =43a(24) =45a(25) =47a(26) =52a(27) =54a(28) =55a(29) =57