Each new term in the Fibonacci sequence is generated by adding the previous two terms. By starting with 0 and 1, the first 12 terms will be:
0, 1, 1, 2, 3, 5, 8, 13, 21, 34, 55, 89, ...
By considering the terms in the Fibonacci sequence whose values do not exceed four million, find the sum of the even-valued terms.
In [1]:
n=0 #this will be the fibonacci numbers
L=[0,1] #list of the numbers
s=0 #the sum (eventually)
while n<4000000: #limiting n
n=L[-1]+(L[-2]) #to define which terms i want
L.append(n) #to put n in the list
if n%2 == 0: #to get the even numbers
s += n #sum them
print (s) #print the sum
In [2]:
# This cell will be used for grading, leave it at the end of the notebook.