oo ____ \ ` \ n \ x / ------ / (3*n)! /___, n = 3
Sum(x^n/factorial(3*n), (n, 3, oo))
/ _ \ | |_ / | x \| | 2 362880* | | | --|| 3 |-362880 - 60480*x - 504*x 0 2 \1/3, 2/3 | 27/| x *|-------------------------- + ---------------------------| | 3 3 | \ x x / ------------------------------------------------------------- 362880
x^3*((-362880 - 60480*x - 504*x^2)/x^3 + 362880*hyper((), (1/3, 2/3), x/27)/x^3)/362880
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