The sum of two infinite series
39302
Radius of convergence of a sum of power series
49936
Various evaluations of the series $\sum_{n=0}^{\infty} \frac{(-1)^n}{(2n+1)^3}$
47596
An infinite series plus a continued fraction by Ramanujan
116723
Evaluating the sum $\sum_{n=1}^{\infty}\dfrac{(-1)^{n}}{n^{2}}$
140458
Infinite summation involving exponents
57759
Determining the infinite sum $\sum\limits_{n=0}^{\infty}\frac{(-1)^n}{2n+1}$
12812
Sum of the alternating harmonic series $\sum_{k=1}^{\infty}\frac{(-1)^{k+1}}{k} = \frac{1}{1} - \frac{1}{2} + \cdots $
112139
limit of quotient of two series
141978
How to find the infinite sum
70841
A simple series $\sum_{i=1}^\infty \frac{i}{2^i} = 2$
140221
Product of two power series
113713
Closed formula for the sum of the following series
74117
Find the sum of series $\sum_{n=0}^{\infty}\frac{z^{kn}}{(kn)!}$
101052
Find the infinite sum $\sum_{k=1}^{\infty}\sqrt k - 2\sqrt {k + 1} + \sqrt {k + 2} $
79415
The series $\sum_{n=2}^{\infty }\frac{1}{\log (n!)}$
100936
What is the sum of this series: $\frac{2}{\pi}\sum_{k=1}^{\infty}\frac{(-1)^{k-1}}{2k-1}$
144877
Taylor series representation as an infinite sum