What number comes next in the series: 2, 9, 28, 65, 126, ?

💡 Solution & Explanation

The terms follow n³ + 1 for n = 1, 2, 3, 4, 5: for example 1³ + 1 = 2. The next value of n is 6, so the answer is 6³ + 1 = 217.