Numbers whose base-9 representation has the same nonzero number of 5's and 8's.

Terms

a(0) =53a(1) =77a(2) =134a(3) =158a(4) =215a(5) =239a(6) =296a(7) =320a(8) =377a(9) =401a(10) =413a(11) =422a(12) =431a(13) =440a(14) =449a(15) =467a(16) =476a(17) =477a(18) =478a(19) =479a(20) =480a(21) =481a(22) =483a(23) =484a(24) =539a(25) =563a(26) =620a(27) =644a(28) =653a(29) =662