freeCodeCamp/curriculum/challenges/english/10-coding-interview-prep/project-euler/problem-354-distances-in-a-...

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---
id: 5900f4cf1000cf542c50ffe1
challengeType: 5
title: 'Problem 354: Distances in a bee''s honeycomb'
forumTopicId: 302014
---
## Description
<section id='description'>
Consider a honey bee's honeycomb where each cell is a perfect regular hexagon with side length 1.
One particular cell is occupied by the queen bee.
For a positive real number L, let B(L) count the cells with distance L from the queen bee cell (all distances are measured from centre to centre); you may assume that the honeycomb is large enough to accommodate for any distance we wish to consider.
For example, B(√3) = 6, B(√21) = 12 and B(111 111 111) = 54.
Find the number of L ≤ 5·1011 such that B(L) = 450.
</section>
## Instructions
<section id='instructions'>
</section>
## Tests
<section id='tests'>
```yml
tests:
- text: <code>euler354()</code> should return 58065134.
testString: assert.strictEqual(euler354(), 58065134);
```
</section>
## Challenge Seed
<section id='challengeSeed'>
<div id='js-seed'>
```js
function euler354() {
return true;
}
euler354();
```
</div>
</section>
## Solution
<section id='solution'>
```js
// solution required
```
</section>