Monotonic ordering of nonnegative differences 10^i-2^j, for 40>= i>=0, j>=0.

Terms

a(0) =0a(1) =2a(2) =6a(3) =8a(4) =9a(5) =36a(6) =68a(7) =84a(8) =92a(9) =96a(10) =98a(11) =99a(12) =488a(13) =744a(14) =872a(15) =936a(16) =968a(17) =984a(18) =992a(19) =996a(20) =998a(21) =999a(22) =1808a(23) =5904a(24) =7952a(25) =8976a(26) =9488a(27) =9744a(28) =9872a(29) =9936