Numbers whose base-12 representation has the same nonzero number of 5's and 6's.

Terms

a(0) =66a(1) =77a(2) =210a(3) =221a(4) =354a(5) =365a(6) =498a(7) =509a(8) =642a(9) =653a(10) =726a(11) =738a(12) =750a(13) =762a(14) =774a(15) =792a(16) =793a(17) =794a(18) =795a(19) =796a(20) =799a(21) =800a(22) =801a(23) =802a(24) =803a(25) =810a(26) =822a(27) =834a(28) =846a(29) =858