Formula:8635

Digital Library of Mathematical Functions ID 26.12.E25

${\displaystyle{\displaystyle\mathrm{pp}\left(n\right)=\frac{1}{n}\sum_{j=1}^{n}\mathrm{pp}\left(n-j\right)\sigma_{2}(j),}}$

Symbols List

• ${\displaystyle{\displaystyle\mathrm{pp}\left(\NVar{n}\right)}}$:
• ${\displaystyle{\displaystyle j}}$: nonnegative integer
• ${\displaystyle{\displaystyle n}}$: nonnegative integer
 

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