Numbers whose base-8 representation has the same nonzero number of 1's and 5's.

Terms

a(0) =13a(1) =41a(2) =69a(3) =85a(4) =93a(5) =101a(6) =104a(7) =106a(8) =107a(9) =108a(10) =110a(11) =111a(12) =117a(13) =125a(14) =141a(15) =169a(16) =205a(17) =233a(18) =269a(19) =297a(20) =321a(21) =328a(22) =330a(23) =331a(24) =332a(25) =334a(26) =335a(27) =337a(28) =345a(29) =353