oo ____ \ ` \ -n \ 2 *(2*n + 1) ) ------------- / n2 / (2*n - 1) /___, n = 1
Sum(((1/2)^n*(2*n + 1))/(2*n - 1)^n2, (n, 1, oo))
oo ___ \ ` \ -n -n2 / 2 *(-1 + 2*n) *(1 + 2*n) /__, n = 1
Sum(2^(-n)*(-1 + 2*n)^(-n2)*(1 + 2*n), (n, 1, oo))
x^n/n
(x-1)^n
1/2^(n!)
n^2/n!
x^n/n!
k!/(n!*(n+k)!)
csc(n)^2/n^3
1/n^2
1/n^4
1/n^6
1/n
(-1)^n
(-1)^(n + 1)/n
(n + 2)*(-1)^(n - 1)
(3*n - 1)/(-5)^n
(-1)^(n - 1)*n/(6*n - 5)
(-1)^(n + 1)/n*x^n
(3*n - 1)/(-5)^n