If ∑n=1∞an\sum_{n=1}^{\infty} a_n∑n=1∞an has partial sums Sn=n2n2+1S_n = \frac{n^2}{n^2+1}Sn=n2+1n2, what is the series' sum?
111
000
∞\infty∞
Does not exist