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%I #7 Oct 21 2019 15:11:00
%S 0,4,15,24,25,115,124,525,615,624,2125,3025,3115,3124,5625,14625,
%T 15525,15615,15624,68125,77125,78025,78115,78124,290625,380625,389625,
%U 390525,390615,390624,953125,1853125,1943125,1952125,1953025,1953115,1953124,8765625
%N Monotonic ordering of nonnegative differences 5^i-10^j, for 40>= i>=0, j>=0.
%t c = 5; d = 10; 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. A192202.
%K nonn
%O 1,2
%A _Clark Kimberling_, Jun 25 2011
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