Mertens function
From specialfunctionswiki
Merten's function is defined by the formula $$M(n) = \displaystyle\sum_{k=1}^n \mu(k),$$ where $\mu$ is the Möbius function.
Merten's function is defined by the formula $$M(n) = \displaystyle\sum_{k=1}^n \mu(k),$$ where $\mu$ is the Möbius function.
