#Project Euler 2 #Find sum of even Fibonacci numbers <4 million #function to return list of first n Fibonacci numbers def fibonacci(n): F = [1,1] #set initial values for i in range(2,n): F.append(F[i-1]+F[i-2]) return F #Find the index of the first Fibonacci number >4 million F=fibonacci(100) for x in F: if x > 4000000: N = F.index(x) break print sum( [ x for x in F[0:N] if x%2==0] ) #4613732 print ''
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