Square sum of binomial coefficients
31970
Alternating sum of squares of binomial coefficients
145690
Quadratic algorithm for 4-SUM
59638
How to prove this result on binomial coefficients?
99249
Sum of product of binomial coefficients: $\sum_{k=0}^{n}(-1)^k\binom{n}{k}\binom{n + k}{k} = (-1)^n$
133905
Intuitive proof of $\sum_{k=1}^{n} \binom{n}{k} k^{k-1} (n-k)^{n-k} = n^n$
134361
Calculating the sum of a binomial coefficient series
146581
The sum of the first $n$ squares $(1 + 4 + 9 + \cdots + n^2)$ is $\frac{n(n+1)(2n+1)}{6}$
83400
Sum of products of binomial coefficients: $ \sum_{l=0}^{n-j} \binom{M-1+l}{l} \binom{n-M-l}{n-j-l} = \binom{n}{j} $
122024
Asymptotic of a sum involving binomial coefficients
49234
Sum of binomial coefficients with index divisible by 4
148949
Find the value of $\sum_{k=1}^{n} k \binom {n} {k}$
17551
Truncated alternating binomial sum
34803
Evaluating even binomial coefficients
41354
Binomial-coefficients if, k, m, n natural numbers and k \leq n the result of
44111
Find the value of $\sum_{k=1}^{n}k\binom{n}{k}$?
133809
Inequality with sum of Binomial coefficients: $\sum\limits^n_{k=1}k \sqrt{\binom nk}\leq\sqrt{2^{n-1}n^3}$
104704
Evaluate $\sum\limits_{k=0}^n \binom{n}{k}$ combinatorially