1.4 KiB
1.4 KiB
id | challengeType | title | forumTopicId |
---|---|---|---|
5900f5431000cf542c510056 | 5 | Problem 471: Triangle inscribed in ellipse | 302148 |
Description
Let G(n) = \sum_{a=3}^n \sum_{b=1}^{\lfloor \frac {a - 1} 2 \rfloor} r(a, b)
You are given G(10) = 20.59722222, G(100) = 19223.60980 (rounded to 10 significant digits).
Find G(1011).
Give your answer in scientific notation rounded to 10 significant digits. Use a lowercase e to separate mantissa and exponent.
For G(10) the answer would have been 2.059722222e1.
Instructions
Tests
tests:
- text: <code>euler471()</code> should return 1.895093981e+31.
testString: assert.strictEqual(euler471(), 1.895093981e+31);
Challenge Seed
function euler471() {
// Good luck!
return true;
}
euler471();
Solution
// solution required