Numbers whose base-6 representation Sum_{i=0..m} d(i)*6^i has d(0) < d(1) > d(2) < ...

Terms

a(0) =1a(1) =2a(2) =3a(3) =4a(4) =5a(5) =6a(6) =12a(7) =13a(8) =18a(9) =19a(10) =20a(11) =24a(12) =25a(13) =26a(14) =27a(15) =30a(16) =31a(17) =32a(18) =33a(19) =34a(20) =48a(21) =49a(22) =54a(23) =55a(24) =56a(25) =60a(26) =61a(27) =62a(28) =63a(29) =66