41 lines
645 B
Markdown
41 lines
645 B
Markdown
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---
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id: 5900f44b1000cf542c50ff5e
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title: 'Problem 223: Almost right-angled triangles I'
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challengeType: 5
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forumTopicId: 301866
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dashedName: problem-223-almost-right-angled-triangles-i
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---
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# --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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# --hints--
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`euler223()` should return 61614848.
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```js
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assert.strictEqual(euler223(), 61614848);
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```
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# --seed--
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## --seed-contents--
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```js
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function euler223() {
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return true;
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}
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euler223();
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```
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# --solutions--
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```js
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// solution required
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```
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