/ 1 1 |-------------- for ----- < 1 | 2 3*|z| | / 1 \ |3*z*|1 - ---| | \ 3*z/ | < oo | ___ | \ ` | \ -n -n | / n*3 *z otherwise | /__, |n = 0 \
Piecewise((1/(3*z*(1 - 1/(3*z))^2), 1/(3*|z|) < 1), (Sum(n*3^(-n)*z^(-n), (n, 0, oo)), True))
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