Numbers whose base-3 representation Sum_{i=0..m} d(i)*3^i has d(m) < d(m-1) > d(m-2) < ...

Terms

a(0) =1a(1) =2a(2) =5a(3) =15a(4) =16a(5) =46a(6) =47a(7) =50a(8) =138a(9) =141a(10) =142a(11) =150a(12) =151a(13) =415a(14) =416a(15) =424a(16) =425a(17) =428a(18) =451a(19) =452a(20) =455a(21) =1245a(22) =1248a(23) =1249a(24) =1272a(25) =1275a(26) =1276a(27) =1284a(28) =1285a(29) =1353