How to find the sum of Beatty sequence of floor(e)+floor(2*e)+floor(3*e)......
114889
Solve summation $\sum_{i=1}^n \lfloor e\cdot i \rfloor $
151012
Find the value of $\lfloor x+y \rfloor$ where $x \in \mathbb{R}$, $y \in \mathbb{Z}$
13677
Sum of digits of repunits
148143
Find the sum to n terms as well as the sum to infinity of the series:
153409
Sum of $1+\frac{1}{2}+\frac{1}{3}+\frac{1}{4}+\frac{1}{6}+\frac{1}{8}+\frac{1}{9}+\frac{1}{12}+\cdots$
71394
Prove the following floor function identity
61270
Binomial Theorem Sum
1449
Floor function properties: $[2x] = [x] + [ x + \frac12 ]$ and $[nx] = \sum_{k = 0}^{n - 1} [ x + \frac{k}{n} ] $
151189
calculate the sum of an infinite series
55061
Evaluating the sum after reordering an infinite series $1-\frac {1} {2}+\frac {1} {3}-\frac {1} {4}+\ldots $
112036
sum of series $\frac{n}{1\cdot 2 \cdot 3}+\frac{n-1}{2\cdot 3\cdot 4}+\frac{n-2}{3\cdot 4 \cdot 5}+\cdots \cdots n$ terms
150563
Find the sum $\sum_{n=1}^{\infty} \frac{\ln n}{n(n- \ln n)}$
57549
Finding the sum $\sum_{k=1}^rk^2\binom {n-k}{r-k}$
129860
Find a formula for this sequence (and prove it).
17056
How to find answer to the sum of series $\sum_{n=1}^{\infty}\frac{n}{2^n} $
70354
Find the sum of all the multiples of 3 or 5 below 1000
14223
Find the infinite sum $\sum_{n=1}^{\infty}\frac{1}{2^n-1}$