sobhagyaSD's blog

A series sum
By sobhagyaSD, history, 5 years ago, In English

Here floor is floor function or greatest integer function and phi is Euler totient function.

For n < 10^4 i tried to find the f(n), and turn out to a simple expression :

Can you provide a proof or some argument related to this expression

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It's correct, here's my proof.

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