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Problem 224


Problem 224


Almost right-angled triangles II

Let us call an integer sided triangle with sides a ≤ b ≤ c barely obtuse if the sides satisfy a2 + b2 = c2 - 1.

How many barely obtuse triangles are there with perimeter ≤ 75,000,000?


几乎执教的三角形II

如果一个边长为整数a ≤ b ≤ c的三角形满足a2 + b2 = c2 - 1,我们称其为略微钝角的三角形。

有多少个周长≤ 75,000,000的略微钝角三角形?