Numbers whose base-8 representation has the same nonzero number of 6's and 7's.

Terms

a(0) =55a(1) =62a(2) =119a(3) =126a(4) =183a(5) =190a(6) =247a(7) =254a(8) =311a(9) =318a(10) =375a(11) =382a(12) =391a(13) =399a(14) =407a(15) =415a(16) =423a(17) =431a(18) =440a(19) =441a(20) =442a(21) =443a(22) =444a(23) =445a(24) =454a(25) =462a(26) =470a(27) =478a(28) =486a(29) =494