Monotonic ordering of nonnegative differences 9^i-2^j, for 40>= i>=0, j>=0.

Terms

a(0) =0a(1) =1a(2) =5a(3) =7a(4) =8a(5) =17a(6) =49a(7) =65a(8) =73a(9) =77a(10) =79a(11) =80a(12) =217a(13) =473a(14) =601a(15) =665a(16) =697a(17) =713a(18) =721a(19) =725a(20) =727a(21) =728a(22) =2465a(23) =4513a(24) =5537a(25) =6049a(26) =6305a(27) =6433a(28) =6497a(29) =6529