How to find $\sum_{k=1}^n k^k$?
634
Closed form formula for $\sum\limits_{k=1}^n k^k$
99453
Sum of $k$-th powers
127806
How to find the sum of the series $\sum_{k=2}^\infty \frac{1}{k^2-1}$?
99249
Sum of product of binomial coefficients: $\sum_{k=0}^{n}(-1)^k\binom{n}{k}\binom{n + k}{k} = (-1)^n$
35525
Methods to compute $\sum_{k=1}^nk^p$ without Faulhaber's formula
146200
proof by induction: sum of binomial coefficients $\sum_{k=0}^n (^n_k) = 2^n$
91933
Evaluate $\sum_{k=1}^nk\cdot k!$
140172
How to compute the Riemann sum of $x^n$ for any positive integer $n$?
88973
How do you calculate this sum $\sum_{n=1}^\infty nx^n$?
30518
Formula for $\sum_{k=1}^n \frac{1}{k(k+1)(k+2)}$?
125148
Summation of series $\sum_{k=0}^\infty 2^k/\binom{2k+1}{k}$
72026
Induction proof of $\sum_{k=1}^{n} \binom n k = 2^n -1 $
126105
Compute $\sum_{k=1}^{n} \frac 1 {k(k + 1)} $
58247
Prove $\sum_{k=0}^n \binom{n+k}{k}=\binom{2n+1}{n}$
50050
A formula for the power sums: $1^n+2^n+\dotsc +k^n=\,$?
69045
Solving this summation: $\sum_{i=1}^k i\cdot2^i$
44328
Prove that $\sum_{k=1} ^ n k^{-1} = \ln(n) + O(1)$