Numbers whose base-8 representation has the same nonzero number of 1's and 3's.

Terms

a(0) =11a(1) =25a(2) =67a(3) =83a(4) =88a(5) =90a(6) =92a(7) =93a(8) =94a(9) =95a(10) =99a(11) =107a(12) =115a(13) =123a(14) =139a(15) =153a(16) =193a(17) =200a(18) =202a(19) =204a(20) =205a(21) =206a(22) =207a(23) =209a(24) =225a(25) =233a(26) =241a(27) =249a(28) =267a(29) =281