Question Number 800 by 123456 last updated on 15/Mar/15
$$\underset{{n}=\mathrm{0}} {\overset{+\infty} {\sum}}\frac{{n}\centerdot\mathrm{cos}\left(\frac{{n}}{\pi^{{n}} }\right)}{\mathrm{1}+{n}^{\mathrm{2}} }\:{converge}\:{ou}\:{diverge}? \\ $$
n-0-n-cos-n-pi-n-1-n-2-converge-ou-diverge-