Finding coefficient of a term in power series expansion of some function
10141
Find closed form expression for series expansion coefficients
124217
Can there be more than one power series expansion for a function.
118436
Identifying the series $\sum\limits_{k=-\infty}^{\infty} 2^k x^{2^k}$
116795
Easiest way to extract the coefficient of a polynomial
74596
Coefficient growth in the power series $\sum u_n z^n = e^{1/(1-z)}$?
51047
Analytic continuation of a power series 2
124440
Evaluate this power series
142445
Laurent series expansion of a given function
158737
What is the value of the series $\sum\limits_{n=1}^\infty \frac{(-1)^n}{n^2}$?
13833
What is the coefficient of the term $a^i b^j c^k$ in the expansion of $(a+b+c)^n$?
130548
What is the sum of the power series: $\sum_{k=2}^\infty\frac{x^k}{k(k-1)}$?
20592
How to find the nth term of tribonacci series
110955
Find the coefficient of $x^9$ in $(1+x)(1+x^2)(1+x^3)\cdots(1+x^{100})$
150600
Radius of Convergence of a given Power series
40464
Find series representation of a function $ y=\frac{1}{1+x+x^{2}+x^{3}} $
61547
Derive an explicit formula for a power series $\sum_{n=1}^\infty n^2x^n$
155527
Find coefficient for $x^{10}$ in $x^3(x^2-3x^3-1)^6$