Find the rules 1, 3, 8, 19, 32__ 19 * 2 + 4 = 32, think twice before you leap.

Find the rules 1, 3, 8, 19, 32__ 19 * 2 + 4 = 32, think twice before you leap.

sixty-nine
1*2+1=3
3*2+2=8
8*2+3=19
19*2+4=32
32*2+5=69
I don't think I have any problem. Are you sure?