Numbers whose base-11 representation has the same nonzero number of 1's and 7's.

Terms

a(0) =18a(1) =78a(2) =128a(3) =150a(4) =161a(5) =172a(6) =183a(7) =194a(8) =198a(9) =200a(10) =201a(11) =202a(12) =203a(13) =204a(14) =206a(15) =207a(16) =208a(17) =216a(18) =227a(19) =238a(20) =260a(21) =320a(22) =381a(23) =441a(24) =502a(25) =562a(26) =623a(27) =683a(28) =744a(29) =804