Numbers whose base-6 representation has the same nonzero number of 0's and 1's.

Terms

a(0) =6a(1) =38a(2) =39a(3) =40a(4) =41a(5) =48a(6) =54a(7) =60a(8) =66a(9) =73a(10) =78a(11) =109a(12) =114a(13) =145a(14) =150a(15) =181a(16) =186a(17) =217a(18) =222a(19) =230a(20) =231a(21) =232a(22) =233a(23) =236a(24) =237a(25) =238a(26) =239a(27) =242a(28) =243a(29) =244