freeCodeCamp/curriculum/challenges/italian/10-coding-interview-prep/project-euler/problem-454-diophantine-rec...

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---
id: 5900f5331000cf542c510045
title: 'Problem 454: Diophantine reciprocals III'
challengeType: 5
forumTopicId: 302127
dashedName: problem-454-diophantine-reciprocals-iii
---
# --description--
In the following equation x, y, and n are positive integers. 1/x + 1/y= 1/n
<!-- TODO Use MathJax -->
For a limit L we define F(L) as the number of solutions which satisfy x &lt; y ≤ L.
We can verify that F(15) = 4 and F(1000) = 1069. Find F(1012).
# --hints--
`euler454()` should return 5435004633092.
```js
assert.strictEqual(euler454(), 5435004633092);
```
# --seed--
## --seed-contents--
```js
function euler454() {
return true;
}
euler454();
```
# --solutions--
```js
// solution required
```