Formula to calculate sum of $k^k $ upto $n$ terms.
634
Closed form formula for $\sum\limits_{k=1}^n k^k$
28027
Find $\sum_{k=0}^{n}4^k \binom{n}{k}$
88973
How do you calculate this sum $\sum_{n=1}^\infty nx^n$?
68848
How to simplify $\sum_{k=1}^nk\cdot k!$
116491
Closed form for $\sum_{k=0}^{m} {\binom {m}{k}} a^{k} (b+ck)^N$
119552
Summing Finitely Many Terms of Harmonic Series: $\sum_{k=a}^{b} \frac{1}{k}$
61871
Formula for the $n$th term of $1, 2, 2, 3, 3, 3, 4, 4 ,4, 4, 5, ...$
123955
How to compute $\sum\limits_{k=0}^n (-1)^k{2n-k\choose k}$?
110441
Closed form for a formula with a summation over $i\binom{n-i}{k-1}$, and combinatorial proof?
115433
Find the summation of given expression: $\sum_{k=1}^n k^3\binom nk$
151085
Simplify the sum $ \sum_{i=0}^{k}(-1)^i i \binom{n}{i} \binom{n}{k-i}$
29524
Formula for the sum $\sum_{i=2}^{n} \frac1{i^2-1}$
131708
Sum of powers of natural numbers
8905
Sum the series $\frac{3}{1⋅2⋅4}+\frac{4}{2⋅3⋅5}+ \frac{5}{3⋅4⋅6}+...\text{(upto n terms)}$
151179
Finding the value of $\sum k/3^k$
73258
Power series summation
57986
Sum of products of combinatorials