--- id: 5900f3df1000cf542c50fef1 challengeType: 5 title: 'Problem 115: Counting block combinations II' videoUrl: '' localeTitle: '' --- ## Description undefined ## Instructions undefined ## Tests ```yml tests: - text: '' testString: 'assert.strictEqual(euler115(), 168, "euler115() should return 168.");' ``` ## Challenge Seed ```js function euler115() { // Good luck! return true; } euler115(); ``` ## Solution ```js // solution required ```
euler115()