Numbers whose base-12 representation has the same nonzero number of 1's and 7's.

Terms

a(0) =19a(1) =85a(2) =151a(3) =175a(4) =187a(5) =199a(6) =211a(7) =223a(8) =228a(9) =230a(10) =231a(11) =232a(12) =233a(13) =234a(14) =236a(15) =237a(16) =238a(17) =239a(18) =247a(19) =259a(20) =271a(21) =283a(22) =307a(23) =373a(24) =451a(25) =517a(26) =595a(27) =661a(28) =739a(29) =805