Numbers whose base-8 representation has the same number of 1's and 2's.

Terms

a(0) =0a(1) =3a(2) =4a(3) =5a(4) =6a(5) =7a(6) =10a(7) =17a(8) =24a(9) =27a(10) =28a(11) =29a(12) =30a(13) =31a(14) =32a(15) =35a(16) =36a(17) =37a(18) =38a(19) =39a(20) =40a(21) =43a(22) =44a(23) =45a(24) =46a(25) =47a(26) =48a(27) =51a(28) =52a(29) =53