oo ____ \ ` \ / n\ \ | n (-1) | ) |8/9 + -----| / | n | / \ 6 / /___, n = 1
Sum((8/9)^n + (-1)^n/6^n, (n, 1, oo))
7.85714285714285714285714285714 - 9.71662949057717758819069562421e-172*i
7.85714285714285714285714285714 - 9.71662949057717758819069562421e-172*i
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