Numbers whose base-7 representation Sum_{i=0..m} d(i)*7^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) =7a(7) =8a(8) =14a(9) =15a(10) =16a(11) =21a(12) =22a(13) =23a(14) =24a(15) =28a(16) =29a(17) =30a(18) =31a(19) =32a(20) =35a(21) =36a(22) =37a(23) =38a(24) =39a(25) =40a(26) =42a(27) =43a(28) =44a(29) =45