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Monotonic ordering of nonnegative differences 10^i-2^j, for 40>= i>=0, j>=0.
3

%I #6 Oct 21 2019 14:41:37

%S 0,2,6,8,9,36,68,84,92,96,98,99,488,744,872,936,968,984,992,996,998,

%T 999,1808,5904,7952,8976,9488,9744,9872,9936,9968,9984,9992,9996,9998,

%U 9999,34464,67232,83616,91808,95904,97952,98976,99488,99744,99872,99936

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

%t c = 10; d = 2; t[i_, j_] := c^i - d^j;

%t u = Table[t[i, j], {i, 0, 40}, {j, 0, i*Log[d, c]}];

%t v = Union[Flatten[u ]]

%Y Cf. A192124.

%K nonn

%O 1,2

%A _Clark Kimberling_, Jun 23 2011