Numbers whose base-10 representation Sum_{i=0..m} d(i)*10^i has d(0) <= d(1) >= d(2) <= ...

Terms

a(0) =1a(1) =2a(2) =3a(3) =4a(4) =5a(5) =6a(6) =7a(7) =8a(8) =9a(9) =10a(10) =11a(11) =20a(12) =21a(13) =22a(14) =30a(15) =31a(16) =32a(17) =33a(18) =40a(19) =41a(20) =42a(21) =43a(22) =44a(23) =50a(24) =51a(25) =52a(26) =53a(27) =54a(28) =55a(29) =60