You are multiplying each number in the sequence by -2. Therefore, the next number in the sequence after 32 is -64.
4
21
-64
33
11
5
3
9
14
Consecutive terms in the sequence are found by dividing by 2 and adding 2. Therefore, after the number 10 comes 10/2 + 2 = 7.
To get the next number in the sequence, you simply multiply by 26*2=1212*2=2424*2=4848*2=96