n ______ \ ` \ / _____\ \ | / 1 | \ sin|pi* / --- | \ \ \/ 4*n / ) ----------------- / _____ / / 1 / pi* / --- / \/ 4*n /_____, n = 1
Sum(sin(pi*sqrt(1/(4*n)))/((pi*sqrt(1/(4*n)))), (n, 1, n))
n _______ \ ` \ / ___\ \ | / 1 | \ |pi* / - | \ | \/ n | \ 2*sin|----------| ) \ 2 / / ----------------- / ___ / / 1 / pi* / - / \/ n /______, n = 1
Sum(2*sin(pi*sqrt(1/n)/2)/(pi*sqrt(1/n)), (n, 1, n))
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