What comes next in the sequence: 1, 3, 11, 43, _____?

What comes next in the sequence: 1, 3, 11, 43, _____?

Explanation

Let's analyze the pattern:

1 × 4 - 1 = 3

3 × 4 - 1 = 11

11 × 4 - 1 = 43

43 × 4 - 1 = 171