Numbers whose base-12 representation has the same number of 2's and 7's.

Terms

a(0) =0a(1) =1a(2) =3a(3) =4a(4) =5a(5) =6a(6) =8a(7) =9a(8) =10a(9) =11a(10) =12a(11) =13a(12) =15a(13) =16a(14) =17a(15) =18a(16) =20a(17) =21a(18) =22a(19) =23a(20) =31a(21) =36a(22) =37a(23) =39a(24) =40a(25) =41a(26) =42a(27) =44a(28) =45a(29) =46