Strange result of an infinite sum
87163
Error computing sum of sum of digits
88973
How do you calculate this sum $\sum_{n=1}^\infty nx^n$?
94871
Sum of an unorthodox infinite series
111705
Why does $\frac{1+t}{(1-t)^3}=\sum_{n=0}^{\infty}(1+n)^2t^n$
16967
Sum : $\sum_{n=0}^\infty \frac{(-1)^n}{(2n+1)^3}$
86194
Infinite series with the binomial coefficient
108605
Identify infinite sum: $\sum\limits_{n=0}^{+\infty}\frac{x^{4n}}{(4n)!}$
125981
Closed-Form Solution to Infinite Sum
144877
Taylor series representation as an infinite sum
14487
Does $\sum_{n=2}^\infty (n\ln n)^{-1}$ diverge?
152698
Evaluation of $\sum_{n=0}^{\infty}\frac{1}{(n^4+n^2+1)n!}$
120988
Infinite Series $\sum 1/(n(n+1))$
151189
calculate the sum of an infinite series
157001
Are there clever ways to evaluate this infinite series?
49262
Evaluation of Sum of $ \sum_{n=1}^{\infty}\frac{\sin (n)}{n}$.
157069
sum of double precision gives weird results
50230
Why does the order of summation of the terms of an infinite series influence its value?