1 36 Double 18 14 Half of 28 68 Doubler 34 40 Half of 80 10 Half of

 Half of 28 Doubler 34 14 68 Half of 20 Half of 80 Double 18 Half of 26 10 40 36 13 80 Half of 160 Double 7 14 Half of 2 1 1 14 13 Half of 2
36 Double 7
40 80 10 Half of 26
68 Double 18
14 Half of 80
Half of 20
Double 21
Double 34
Half of 28
42