What is the next number in the following sequence? 12, 41, 169, 850, ?

Question: What is the next number in the following sequence?12, 41, 169, 850, ?Solution: (12 × 3) + 5 = 41(41 × 4) + 5 =169(169 × 5) + 5 = 850(850 × 6) + 5 = 5105