A checker starts at square 4 of the checkerboard shown here. At any time, it can move to any diagonally adjacent square
below its current position. How many possible ways are there for the checker to move from square 4 to square 32?
سا
4
5
12
1 2. 3
6 7 8
10 11 12
13 14 15 16
17 18 19 20
21 22 23 24
25 26 27 28
29 30 31 32
32
0204