Numbers having three 6's in base 9.

Terms

a(0) =546a(1) =1275a(2) =2004a(3) =2733a(4) =3462a(5) =4191a(6) =4434a(7) =4515a(8) =4596a(9) =4677a(10) =4758a(11) =4839a(12) =4866a(13) =4875a(14) =4884a(15) =4893a(16) =4902a(17) =4911a(18) =4914a(19) =4915a(20) =4916a(21) =4917a(22) =4918a(23) =4919a(24) =4921a(25) =4922a(26) =4929a(27) =4938a(28) =5001a(29) =5082