---
title: Ackermann function
id: 594810f028c0303b75339acf
challengeType: 5
videoUrl: ''
localeTitle: ''
---

## Description
undefined

## Instructions
undefined

## Tests
<section id='tests'>

```yml
tests:
  - text: ''
    testString: 'assert(typeof ack === "function", "<code>ack</code> is a function.");'
  - text: ''
    testString: 'assert(ack(0, 0) === 1, "<code>ack(0, 0)</code> should return 1.");'
  - text: ''
    testString: 'assert(ack(1, 1) === 3, "<code>ack(1, 1)</code> should return 3.");'
  - text: ''
    testString: 'assert(ack(2, 5) === 13, "<code>ack(2, 5)</code> should return 13.");'
  - text: ''
    testString: 'assert(ack(3, 3) === 61, "<code>ack(3, 3)</code> should return 61.");'

```

</section>

## Challenge Seed
<section id='challengeSeed'>

<div id='js-seed'>

```js
function ack (m, n) {
  // Good luck!
}

```

</div>



</section>

## Solution
<section id='solution'>

```js
// solution required
```
</section>