Numbers whose base-9 representation has the same nonzero number of 6's and 8's.

Terms

a(0) =62a(1) =78a(2) =143a(3) =159a(4) =224a(5) =240a(6) =305a(7) =321a(8) =386a(9) =402a(10) =467a(11) =483a(12) =494a(13) =503a(14) =512a(15) =521a(16) =530a(17) =539a(18) =557a(19) =558a(20) =559a(21) =560a(22) =561a(23) =562a(24) =563a(25) =565a(26) =629a(27) =645a(28) =654a(29) =663