Numbers whose base-5 representation Sum_{i=0..m} d(i)*5^i has d(m) >= d(m-1) <= d(m-2) >= ...

Terms

a(0) =1a(1) =2a(2) =3a(3) =4a(4) =5a(5) =6a(6) =10a(7) =11a(8) =12a(9) =15a(10) =16a(11) =17a(12) =18a(13) =20a(14) =21a(15) =22a(16) =23a(17) =24a(18) =25a(19) =26a(20) =27a(21) =28a(22) =29a(23) =31a(24) =32a(25) =33a(26) =34a(27) =50a(28) =51a(29) =52