is there a formula for the sum of n'th powers
99453
Sum of $k$-th powers
57549
Finding the sum $\sum_{k=1}^rk^2\binom {n-k}{r-k}$
77519
I'm searching for the formula of the series $ \sum_{n=0}^{\infty}a^{n^l} $
39659
Is there a closed formula for this summation?
110975
Summation of reciprocals
63965
How can I compute the sum of $ {m\over\gcd(m,n)}$?
17306
To find all $n$ such that $(n-1)!+1$ is a perfect power of $n$
114414
Sum of $\sum_{k=1}^n\sin{k\theta}$
138456
How to fit $\sum{n^{2}x^{n}}$ into a generating function?
39302
Radius of convergence of a sum of power series
29524
Formula for the sum $\sum_{i=2}^{n} \frac1{i^2-1}$
112084
Proof of a formula for the power set of a union of two sets
67731
Calculate the sum of infinite series with general term $\frac{n^2}{2^n}$.
7302
$\sum k! = 1! +2! +3! + \cdots + n!$ ,is there a generic formula for this?
61547
Derive an explicit formula for a power series $\sum_{n=1}^\infty n^2x^n$
52241
Calculate sum of series $\sum \frac{n^2}{n!}$
1379
Summation of $n^2x^n$ terms