1 |
2 |
1 |
3 |
3-2 |
2×3 |
1 |
6 |
1 |
3 |
1 |
4 |
4-3 |
3×4 |
1 |
12 |
1 |
4 |
1 |
5 |
5-4 |
4×5 |
1 |
20 |
1 |
n |
1 |
n+1 |
1 |
n(n+1) |
1 |
n(n+1) |
1 |
2 |
1 |
6 |
1 |
12 |
1 |
20 |
1 |
30 |
1 |
42 |
1 |
2 |
输入 | … | 1 | 2 | 3 | 4 | 5 | … | ||||||||||
输出 | … |
|
|
|
|
|
… |
8 |
17 |
8 |
17 |
1 |
1 |
1 |
2 |
1 |
3 |
1 |
4 |
1 |
4 |
1 |
5 |
1 |
6 |
1 |
7 |
1 |
7 |
1 |
2007 |
1 |
2007 |
1 |
1-4 |
7 |
7-4 |
2 |
2-4 |
6 |
6-4 |
3 |
3-4 |
5 |
5-4 |
10 |
10-4 |
-2 |
-2-4 |
19 |
19-4 |
m |
m-4 |