1 3 x 3 5 x 15 2 July 8, 2019 16 32 64 128 1 3 x 2 )+ 1 4 x 3 )= 1 5 x 4 )+ 15 8 1 2 x 5 3 3 x 15 2x 3 x 5 1 3x 15 x 3 2 3 2x 1 )+ 3 x 1 )- 2 x 5 )= 15 8 x