Answer
$$ \Sigma_{n=0}^\infty \frac{1}{n}$$
Work Step by Step
The easiest example is the P-series:
$$ \Sigma_{n=0}^\infty \frac{1}{n}$$
it is divergent since $p=1$ (harmonic series). At the same time, we have $\lim_{n\to \infty}\frac{1}{n}=0.$