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%I #5 Mar 30 2012 18:56:44
%S 75,175,275,375,475,575,675,750,775,875,975,1075,1175,1275,1375,1475,
%T 1575,1675,1750,1775,1875,1975,2075,2175,2275,2375,2475,2575,2675,
%U 2750,2775,2875,2975,3075,3175,3275,3375,3475,3575
%N Numbers n such that string 7,5 occurs in the base 10 representation of n but not of n-1.
%K nonn,base
%O 1,1
%A _Clark Kimberling_
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