freeCodeCamp/curriculum/challenges/english/10-coding-interview-prep/project-euler/problem-341-golombs-self-de...

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---
id: 5900f4c11000cf542c50ffd3
challengeType: 5
title: 'Problem 341: Golomb''s self-describing sequence'
forumTopicId: 302000
---
## Description
<section id='description'>
The Golomb's self-describing sequence {G(n)} is the only nondecreasing sequence of natural numbers such that n appears exactly G(n) times in the sequence. The values of G(n) for the first few n are
n123456789101112131415…G(n)122334445556666…
You are given that G(103) = 86, G(106) = 6137.
You are also given that ΣG(n3) = 153506976 for 1 ≤ n < 103.
Find ΣG(n3) for 1 n < 106.
</section>
## Instructions
<section id='instructions'>
</section>
## Tests
<section id='tests'>
```yml
tests:
- text: <code>euler341()</code> should return 56098610614277016.
testString: assert.strictEqual(euler341(), 56098610614277016);
```
</section>
## Challenge Seed
<section id='challengeSeed'>
<div id='js-seed'>
```js
function euler341() {
return true;
}
euler341();
```
</div>
</section>
## Solution
<section id='solution'>
```js
// solution required
```
</section>