--- id: 5900f4ef1000cf542c510001 challengeType: 5 title: 'Problem 386: Maximum length of an antichain' videoUrl: '' localeTitle: '' --- ## Description undefined ## Instructions undefined ## Tests ```yml tests: - text: '' testString: 'assert.strictEqual(euler386(), 528755790, "euler386() should return 528755790.");' ``` ## Challenge Seed ```js function euler386() { // Good luck! return true; } euler386(); ``` ## Solution ```js // solution required ```
euler386()