Alternating row sums of Pascal's Triangle
7083
Alternating sum of binomial coefficients: given $n \in \mathbb N$, prove $\sum^n_{k=0}(-1)^k {n \choose k} = 0$
138072
Linear time algorithm for 2-SUM
108694
Efficient computation of $\sum_{i=1}^{i=\left \lfloor {\sqrt{N}} \right \rfloor}\left \lfloor \frac{N}{i^{2}} \right \rfloor$
32260
Alternating Sum of Cubes
1139
Combinatorial proof of $\sum_{j=0}^{k} \binom{n}{j} = \sum_{j=0}^k \binom{n-1-j}{k-j}2^j$
31970
Alternating sum of squares of binomial coefficients
26908
Partial Sums of Geometric Series
86067
A Variation of the even-town odd-town problem
94060
Sum of square binomial coefficients
69194
Partitioning sum of squares
109599
A finite sum involving the binomial coefficients and the harmonic numbers
44795
Sum of areas of triangles which have corners which are lattice points with 74 lattice points inside.
62660
Computing the limit of an alternating series,
115686
A finite summation of double binomial coefficients
85860
Pascal's triangle in tikz
54521
Making all row sums and column sums non-negative by a sequence of moves
116153
The Notorious Triangle Problem