I was goofing around with Mathematica and found that Sum_(k>=1)(sin(k)/k)=Sum_(k>=1)(sin(k)/k)^2. In other words a convergent series such that if you square each of its terms the sum is the same. Question is: is this a unique property or are there other convergent series with the property? Cheers.(adsbygoogle = window.adsbygoogle || []).push({});

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# Convergent series

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