Numbers whose base-8 representation has the same nonzero number of 0's and 3's.

Terms

a(0) =24a(1) =67a(2) =88a(3) =131a(4) =152a(5) =193a(6) =194a(7) =196a(8) =197a(9) =198a(10) =199a(11) =200a(12) =208a(13) =224a(14) =232a(15) =240a(16) =248a(17) =259a(18) =280a(19) =323a(20) =344a(21) =387a(22) =408a(23) =451a(24) =472a(25) =523a(26) =531a(27) =537a(28) =538a(29) =540