--- id: 5900f40f1000cf542c50ff22 challengeType: 5 title: 'Problem 163: Cross-hatched triangles' videoUrl: '' localeTitle: '' --- ## Description undefined ## Instructions undefined ## Tests ```yml tests: - text: '' testString: 'assert.strictEqual(euler163(), 343047, "euler163() should return 343047.");' ``` ## Challenge Seed ```js function euler163() { // Good luck! return true; } euler163(); ``` ## Solution ```js // solution required ```
euler163()