query: Find $S=\sum_{n=1}^{\infty}\frac{1}{n^3 2^n}$
positive_passages.docid: 24202
positive_passages.text: The value of the trilogarithm at $\frac{1}{2}$
negative_passages.docid: 67752
negative_passages.text: Show that $\sum_{n = 1}^{+\infty} \frac{n}{2^n} = 2$
negative_passages.docid: 137155
negative_passages.text: Sum $ \sum\limits_{k=1}^{\infty} \frac{k^2}{2^k}$
negative_passages.docid: 52987
negative_passages.text: $\sum_{n=-\infty}^{\infty}\frac{1}{(n+\alpha)^2}=\frac{\pi^2}{(\sin \pi \alpha)^2}$?
negative_passages.docid: 132182
negative_passages.text: $\sum_{n=1}^\infty \sum_{m=1}^\infty\frac{1}{(m+n)^2}$
negative_passages.docid: 67271
negative_passages.text: $\sum_{n=-\infty}^{\infty}\frac{1}{(u +n)^2}=\frac{\pi^2}{(\sin \pi u)^2}$
negative_passages.docid: 76387
negative_passages.text: Evaluate the series $\sum_{n=1}^{\infty} \frac{2^{[\sqrt{n}]}+2^{-[\sqrt{n}]}}{2^n}$
negative_passages.docid: 57372
negative_passages.text: Series convergence of $\sum_{n=1}^{\infty}\frac{1}{n^3}$
negative_passages.docid: 101052
negative_passages.text: Find the infinite sum $\sum_{k=1}^{\infty}\sqrt k - 2\sqrt {k + 1} + \sqrt {k + 2} $
negative_passages.docid: 58262
negative_passages.text: Find the sum of the series $1+\frac{1}{3}\cdot\frac{1}{4}+\frac{1}{5}\cdot\frac{1}{4^2}+\frac{1}{7}\cdot\frac{1}{4^3}+\cdots$
negative_passages.docid: 30895
negative_passages.text: Compute the sum of the series $\sum_{n=1}^{\infty} \frac{1}{n \cdot 2^n}$
negative_passages.docid: 150563
negative_passages.text: Find the sum $\sum_{n=1}^{\infty} \frac{\ln n}{n(n- \ln n)}$
negative_passages.docid: 154544
negative_passages.text: Prove that $ \sum_{n=0}^\infty \frac{z^{2^n}}{1-z^{2^{n+1}}}=\frac{z}{1-z} $
negative_passages.docid: 80201
negative_passages.text: Geometric series sum $\sum_2^\infty e^{3-2n}$
negative_passages.docid: 16967
negative_passages.text: Sum : $\sum_{n=0}^\infty \frac{(-1)^n}{(2n+1)^3}$
negative_passages.docid: 61850
negative_passages.text: Compute $\sum_{k=0}^{\infty}\frac{1}{2^{k!}}$
negative_passages.docid: 4253
negative_passages.text: How to calculate: $\sum_{n=1}^{\infty} n a^n$