Numbers whose base-12 representation has the same nonzero number of 6's and 7's.

Terms

a(0) =79a(1) =90a(2) =223a(3) =234a(4) =367a(5) =378a(6) =511a(7) =522a(8) =655a(9) =666a(10) =799a(11) =810a(12) =871a(13) =883a(14) =895a(15) =907a(16) =919a(17) =931a(18) =948a(19) =949a(20) =950a(21) =951a(22) =952a(23) =953a(24) =956a(25) =957a(26) =958a(27) =959a(28) =967a(29) =979