oo ___ \ ` \ n!*(2*n + 1)! ) ------------- / (3*n)! /__, n = 1
Sum((factorial(n)*factorial(2*n + 1))/factorial(3*n), (n, 1, oo))
_ |_ /1, 2, 5/2 | \ | | | 4/27| 3 2 \ 4/3, 5/3 | /
hyper((1, 2, 5/2), (4/3, 5/3), 4/27)
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