2018-09-30 22:01:58 +00:00
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---
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id: 5900f44b1000cf542c50ff5e
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challengeType: 5
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title: 'Problem 223: Almost right-angled triangles I'
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---
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## Description
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<section id='description'>
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Let us call an integer sided triangle with sides a ≤ b ≤ c barely acute if the sides satisfy a2 + b2 = c2 + 1.
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How many barely acute triangles are there with perimeter ≤ 25,000,000?
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</section>
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## Instructions
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<section id='instructions'>
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</section>
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## Tests
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<section id='tests'>
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```yml
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2018-10-04 13:37:37 +00:00
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tests:
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- text: <code>euler223()</code> should return 61614848.
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2018-10-08 00:01:53 +00:00
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testString: 'assert.strictEqual(euler223(), 61614848, "<code>euler223()</code> should return 61614848.");'
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2018-09-30 22:01:58 +00:00
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```
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</section>
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## Challenge Seed
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<section id='challengeSeed'>
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<div id='js-seed'>
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```js
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function euler223() {
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// Good luck!
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return true;
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}
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euler223();
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```
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</div>
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</section>
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## Solution
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<section id='solution'>
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```js
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// solution required
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```
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</section>
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