# Python 3 Program to find
# sum of Fibonacci numbers
# Computes value of first
# fibonacci numbers
def calculateSum(n) :
if (n <= 0) :
return 0
fibo =[0] * (n+1)
fibo[1] = 1
# Initialize result
sm = fibo[0] + fibo[1]
# Add remaining terms
for i in range(2,n+1) :
fibo[i] = fibo[i-1] + fibo[i-2]
sm = sm + fibo[i]
return sm
# Driver program to test
# above function
n = 4
print("Sum of Fibonacci numbers is : " ,
calculateSum(n))