Write a program to display the sum of the given series: Sum=1 + (1+2) + (1+2+3) + (1+2+ 3.....n)

Q. Write a program to display the sum of the given series:

Sum=1 + (1+2) + (1+2+3) + (1+2+ 3.....n)

Answer :-

num = int(input("Enter the number:- "))
sum = 0
for i in range (2, num + 2):
    term = 0
    for j in range (1, i):
        term += j
    print ("Term", (i - 1), ":", term)
    sum += term
print ("Sum of", num, "term is", sum)

Output :-

Enter the number:- 3
Term 1 : 1
Term 2 : 3
Term 3 : 6
Sum of 3 term is 10
>>>