General formula for $\sum_{k=1}^{N} k^n$?
45084
How is Faulhaber's formula derived?
123144
Formula : (Exact) Sum of $1^1+2^2+3^3+..+n^n$ (modulo $10^m$) with relatively small $m$
87479
Closed form for $\sum_{k=0}^{n-p}\binom{n}{k}\binom{n}{p+k}$
89367
Calculate $ S =\sum_{k=1}^n\frac {1}{k(k+1)(k+2)}. $
68848
How to simplify $\sum_{k=1}^nk\cdot k!$
37007
Evaluating $\sum_{k=1}^{n} \frac{1}{k(k+1)}$
139074
Question about $a_n=\sum_{k=1}^n \frac{n}{n^2+k}\ $for $ n \in\mathbb{N}$
115433
Find the summation of given expression: $\sum_{k=1}^n k^3\binom nk$
38741
Finding a general formula for summation
128200
Sequence sum question: $\sum_{n=0}^{\infty}nk^n$
42831
How to derive the formula for the sum of the first $n$ odd numbers: $n^2=\sum_{k=1}^n(2k-1).$
634
Closed form formula for $\sum\limits_{k=1}^n k^k$
110996
Sum of the form $r+r^2+r^4+\dots+r^{2^k} = \sum_{i=1}^k r^{2^i}$
70248
Closed-form expression for $\sum_{k=0}^n\binom{n}kk^p$ for integers $n,\,p$
99453
Sum of $k$-th powers
158004
A formula for $1^4+2^4+...+n^4$
29524
Formula for the sum $\sum_{i=2}^{n} \frac1{i^2-1}$