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Question Number 166254 by mnjuly1970 last updated on 16/Feb/22
Θ=∑∞n=1Hnn.(n+1)=?π26−−−−+
Answered by Kamel_Ben last updated on 16/Feb/22
Θ=∑+∞n=1Hn+1−1n+1n(n+1)=∑+∞n=1Hn+1n(n+1)−∑+∞n=11n(n+1)+∑+∞n=11(n+1)2=∑+∞n=1(Hnn−Hn+1n+1)+π26−1=π26
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