Numbers whose base-8 representation has the same nonzero number of 0's and 7's.

Terms

a(0) =56a(1) =71a(2) =120a(3) =135a(4) =184a(5) =199a(6) =248a(7) =263a(8) =312a(9) =327a(10) =376a(11) =391a(12) =440a(13) =449a(14) =450a(15) =451a(16) =452a(17) =453a(18) =454a(19) =456a(20) =464a(21) =472a(22) =480a(23) =488a(24) =496a(25) =527a(26) =535a(27) =543a(28) =551a(29) =559