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) =8a(6) =9a(7) =10a(8) =11a(9) =15a(10) =16a(11) =17a(12) =22a(13) =23a(14) =29a(15) =37a(16) =38a(17) =39a(18) =40a(19) =41a(20) =73a(21) =74a(22) =75a(23) =76a(24) =77a(25) =80a(26) =81a(27) =82a(28) =83a(29) =109