Infinite series with e and pi
105177
Gosper's unusual formula connecting $e$ and $\pi$
70841
A simple series $\sum_{i=1}^\infty \frac{i}{2^i} = 2$
25504
How to find sum of the infinite series $\sum_{n=1}^{\infty} \frac{1}{ n(2n+1)}$
13592
How can $\pi$ be irrational if it can be calculated using an infinite series of rational numbers?
47596
An infinite series plus a continued fraction by Ramanujan
120906
Is there a proof that $\pi \times e$ is irrational?
8705
Evaluation of $\sum_{x=0}^\infty e^{-x^2}$
80201
Geometric series sum $\sum_2^\infty e^{3-2n}$
22657
How to find the sum of the infinite series?
111094
Help with proving that $\pi$ is irrational
24033
Infinite Series $\sum\limits_{k=1}^{\infty}\frac{k^n}{k!}$
152227
How to sum this series to infinity: $\sum_{n=0}^{\infty} \frac1{2^{2^n}}$
85311
Proving that $e^{\pi}-{\pi}^e\lt 1$ without using a calculator
19899
infinite series of the form $\sum\limits_{k=1}^{\infty}\frac{1}{a^{k}+1}$
11391
Series that converge to $\pi$ quickly
64223
Infinite Series $\sum\limits_{n=1}^\infty\left(\frac{H_n}n\right)^2$
27224
Infinite series $\sum_{k=1}^\infty \frac{k}{2^k}$ and $\sum_{k=1}^\infty \frac{k^2}{2^k}$