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" If "s(n)=sum(r=0)^(n)(1)/(n(C))" and "...

" If "s_(n)=sum_(r=0)^(n)(1)/(n_(C))" and "t_(n)=sum_(r=0)^(n)(r)/(^(n)C_(r))," if "(t_(n))/(s_(n))=

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