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Let $\mathbb{N}=\{1,2,\cdots\}$. Does there exist a bijective function $\pi:\mathbb{N} \to \mathbb{N}$ such that $$\sum_{n=1}^{\infty}\dfrac{\pi{(n)}}{n^2}<\infty ?$$

My try: note $$\sum_{n=1}^{\infty}\dfrac{1}{n^2} $$ is convergent,

and then I can't. Thank you.

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