Closed form for Weird Series?
12423
"Closed" form for $\sum \frac{1}{n^n}$
109674
If $(I-T)^{-1}$ exists, can it always be written in a series representation?
86194
Infinite series with the binomial coefficient
105497
A function satisfying a series equation
39909
Getting a closed form from $\sum_{i=1}^{n-1} \sum_{j=i+1}^{n} \sum_{k=1}^{j} 1$
84121
Double factorial series
92754
Closed form for the series: $\sum_{n=1}^{\infty}x^{n^2}$
42736
Is there a closed form for $\sum_{k=0}^n \frac{x^k}{k!}$?
38760
Infinite Series $\sum\limits_{n=0}^\infty\frac{(-1)^n}{(2n+1)^{2m+1}}$
40867
Are there any series whose convergence is unknown?
16320
confused about geometric series closed formula
110585
Rearranging infinite series
45588
Summing a series with a changing power
4672
Example of two convergent series whose product is not convergent.
125981
Closed-Form Solution to Infinite Sum
79105
Expand series unevaluated
69000
Looking for closed-forms of $\int_0^{\pi/4}\ln^2(\sin x)\,dx$ and $\int_0^{\pi/4}\ln^2(\cos x)\,dx$