PYTHON--欧拉习题二，,练习题来源:http

PYTHON--欧拉习题二，,练习题来源:http

练习题来源:

https://projecteuler.net/archives

Problem 2

Each new term in the Fibonacci sequence is generated by adding the previous two terms. By starting with 1 and 2, the first 10 terms will be:

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.

问题2：

斐波那契数列的规则是：后一个数字是前两个数字之和，如前十个斐波那契数列为:

1, 2, 3, 5, 8, 13, 21, 34, 55, 89, ...

那么根据其规律，找出400，0000以内的斐波那契数，计算其偶数之和

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PYTHON--欧拉习题二