Original Function
Constant Term (n = 0)
First Term (n = 1)
Second Term (n = 2)
Third Term (n = 3)
Fourth Term (n = 4)
Sum of first Terms
Sum of first 2 Terms
Sum of first 3 Terms
Sum of first 4 Terms
Sum of first 5 Terms
Sum of first 10 Terms
Sum of first 20 Terms