What comes next 1 2 3 6 7 14 15?

Answer 1

The next number in the sequence would be 30.

The general rule is multiply by 2, then add 1.

1 x 2 = 2

2 + 1 = 3

3 x 2 = 6

6 + 1 = 7

7 x 2 = 14

14 + 1 = 15

15 x 2 = 30