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---
id: 5900f40d1000cf542c50ff20
challengeType: 5
title: 'Problem 161: Triominoes'
videoUrl: ''
localeTitle: 问题161Triominoes
---
## Description
<section id="description">三角形是由三个通过边缘连接的正方形组成的形状。有两种基本形式: <p>如果考虑所有可能的方向,则有六个: </p><p>任何n×m网格的nxm可以被3整除可以用三角形平铺。如果我们考虑通过反射或从另一个平铺旋转获得的倾斜不同有41种方式可以使用三角形平铺2乘9的网格 </p><p>有多少种方式可以通过三角形以这种方式平铺9乘12的网格 </p></section>
## Instructions
undefined
## Tests
<section id='tests'>
```yml
tests:
- text: <code>euler161()</code>应该返回20574308184277972。
testString: 'assert.strictEqual(euler161(), 20574308184277972, "<code>euler161()</code> should return 20574308184277972.");'
```
</section>
## Challenge Seed
<section id='challengeSeed'>
<div id='js-seed'>
```js
function euler161() {
// Good luck!
return true;
}
euler161();
```
</div>
</section>
## Solution
<section id='solution'>
```js
// solution required
```
</section>