2 1 2 x 1 1 3 x 3 5 July 8, 2019 16 32 64 128 X 1 2 x 1 3 2x 3 5 2 1 4 x 1 1 2 x 5 3 3 1 2 x 5 2 3 x 1 1 8 1 + 1 = 2 + 2 = 3