Solving for the coefficients of a series
49284
Solving an ODE in power series
86194
Infinite series with the binomial coefficient
49982
Closed expression for infinite series
70460
How can I solve the following sequence
53658
Find the sum series $\sum_{n=1}^{+\infty} \frac{(-1)^{n-1}(2n-1)}{2^{n-1}}$
97315
Assuming convergence of the following series, find the value of $\sqrt{6+\sqrt{6+\sqrt{6+...}}}$
120238
I have a question about properties of series.
65653
Find a closed form of the series $\sum_{n=0}^{\infty} n^2x^n$
29170
Find the sum of the series $\sum \frac{1}{n(n+1)(n+2)}$
20945
On a series involving harmonic numbers
113713
Closed formula for the sum of the following series
70841
A simple series $\sum_{i=1}^\infty \frac{i}{2^i} = 2$
140221
Product of two power series
117863
Series $\sum_{n=1}^\infty \frac{n^n}{(n!)^2}$
119552
Summing Finitely Many Terms of Harmonic Series: $\sum_{k=a}^{b} \frac{1}{k}$
43320
Find the sum of the power series $\sum_{n=1}^\infty n*(n+1)*x^n$
49936
Various evaluations of the series $\sum_{n=0}^{\infty} \frac{(-1)^n}{(2n+1)^3}$