16 i would belive the number to be as it is being doubled everytime.
8 7 5 2 -2 .1.2.3..4 Therefore, -2 is the next number.
The next number in the series 1 2 4 8 10 20 22 is
8
4
16
Either 14 or 16 continues a rule that generates 2 - 4 - 8.
2
If you mean: 1, 2, 4, 8 and 16 then the next number is 32
32
32
22
22