Numbers whose base-12 representation has the same nonzero number of 1's and 5's.

Terms

a(0) =17a(1) =61a(2) =149a(3) =173a(4) =185a(5) =197a(6) =204a(7) =206a(8) =207a(9) =208a(10) =210a(11) =211a(12) =212a(13) =213a(14) =214a(15) =215a(16) =221a(17) =233a(18) =245a(19) =257a(20) =269a(21) =281a(22) =305a(23) =349a(24) =449a(25) =493a(26) =593a(27) =637a(28) =721a(29) =732