Numbers whose base-6 representation has the same number of 2's and 3's.

Terms

a(0) =0a(1) =1a(2) =4a(3) =5a(4) =6a(5) =7a(6) =10a(7) =11a(8) =15a(9) =20a(10) =24a(11) =25a(12) =28a(13) =29a(14) =30a(15) =31a(16) =34a(17) =35a(18) =36a(19) =37a(20) =40a(21) =41a(22) =42a(23) =43a(24) =46a(25) =47a(26) =51a(27) =56a(28) =60a(29) =61