What is exact value of $\sum_{n=1}^{\infty} \frac{1}{n^n}$ .
12423
"Closed" form for $\sum \frac{1}{n^n}$
14883
Find $\sum_{n=1}^{\infty}$ $\frac{n^{2}}{\left(n+1\right)\left(n+2\right)\left(n+3\right)\left(n+4\right)}$
112950
Find the value of infinite series $\sum_{n=1}^{\infty} \tan^{-1}(2/n^2)$
52987
$\sum_{n=-\infty}^{\infty}\frac{1}{(n+\alpha)^2}=\frac{\pi^2}{(\sin \pi \alpha)^2}$?
13796
What is the value of $\prod_{n=1}^\infty (1+\frac{1}{n^2})$?
151649
Exact Values of the integal $\int_0^\infty \frac{r^{n-1}}{(1+r^2)^{\frac{s}{2}}}\,dr$
131023
Evaluate the sum: $\sum\limits_{n=0}^{\infty} \frac1{F_{(2^n)}}$
125915
An Infinite Double Summation $\sum_{k=1}^{\infty} \sum_{n=1}^{\infty} \frac{1}{n^2k^2(n+k)^2}$?
16967
Sum : $\sum_{n=0}^\infty \frac{(-1)^n}{(2n+1)^3}$
63863
Evaluate: $\sum_{n=1}^{\infty}\frac{1}{n k^n}$
137640
Proof that $\sum_{1}^{\infty} \frac{1}{n^2} <2$
152698
Evaluation of $\sum_{n=0}^{\infty}\frac{1}{(n^4+n^2+1)n!}$
128285
Why is $ \sum_{n=0}^{\infty}\frac{x^n}{n!} = e^x$?
74117
Find the sum of series $\sum_{n=0}^{\infty}\frac{z^{kn}}{(kn)!}$
61659
How to show that $ \sum_{n = 0}^{\infty} \frac {1}{n!} = e$?
6416
How can I evaluate $\sum_{n=0}^\infty(n+1)x^n$?
14223
Find the infinite sum $\sum_{n=1}^{\infty}\frac{1}{2^n-1}$