Numbers whose base-9 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) =8a(7) =9a(8) =10a(9) =13a(10) =14a(11) =15a(12) =16a(13) =17a(14) =21a(15) =29a(16) =36a(17) =37a(18) =40a(19) =41a(20) =42a(21) =43a(22) =44a(23) =45a(24) =46a(25) =49a(26) =50a(27) =51a(28) =52a(29) =53