Numbers whose base-4 representation Sum_{i=0..m} d(i)*4^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) =12a(9) =13a(10) =14a(11) =15a(12) =20a(13) =21a(14) =24a(15) =25a(16) =26a(17) =28a(18) =29a(19) =30a(20) =31a(21) =40a(22) =41a(23) =42a(24) =44a(25) =45a(26) =46a(27) =47a(28) =60a(29) =61