30,40,20,40,20,50,25…

30, 40, 20, 40, 20, 50, 25, 65

30 + 10 = 40
40 / 2 = 20
20 + 20 = 40
40 / 2 = 20
20 + 30 = 50
50 / 2 = 25
25 + 40 = 65