Python Program to Find Sum of Natural Numbers Using Recursion

 # Python program to find the sum of natural using recursive function

def recur_sum(n):

   if n <= 1:

       return n

   else:

       return n + recur_sum(n-1)

# change this value for a different result

num = 16

if num < 0:

   print("Enter a positive number")

else:

   print("The sum is",recur_sum(num))

Output

The sum is 136