Layer 10: 2
Ninth floor: the sixth floor
Eighth floor: 14
half past seven
The sixth floor: 62
Fifth floor: 126
The fourth floor: 254
Third floor: 5 10
Second floor: 1022
Layer 1: 2046
Obviously, the floor of 10 has just used up "more than half of the upper floor", which means that there are two floors of 10; That is, there are two blocks left on the ninth floor. Because each floor is "more than half a floor", when building a ninth floor, two pieces plus one piece is half the number, that is, when building a ninth floor, there is always * * * (2+ 1)*3=6 pieces. Similarly, the total number of each layer is the number of bricks in the upper layer plus 1 and then multiplied by 2.