-1 + n ___ \ ` \ 1 ) --------------- / (x + 2)*(x + 3) /__, n = 0
Sum(1/((x + 2)*(x + 3)), (n, 0, -1 + n))
n --------------- (2 + x)*(3 + x)
n/((2 + x)*(3 + x))
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