What is the missing number in the following series: 5, 23, 59, 113, ?, 275

Question

What is the next number in the series - 3, 76, 49, 24, 59, ??

Answer 1

5 + 18*1 = 23
23 + 18*2 = 59
59 + 18*3 = 113
113 + 18*4 = 185
185 + 18*5 = 275.