oo _____ \ ` \ / ________\ \ | / 3 | \ 2|\/ n - 1 | / sin |-----------| / | 2 | / \ n + 1 / /____, n = 1
Sum(sin(sqrt(n^3 - 1)/(n^2 + 1))^2, (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