n
2n
2
4
1
−4
3
2
3
6
1
6
−5
2
3
−4
4
8
1
8
−7
3
4
2
−6
5
5
10
1
10
−9
4
5
3
−8
2
6
−7
6
12
1
12
−11
5
6
4
−10
3
7
2
−9
8
| n | 2n |
|
|
|
|
|
|
|
|
|
|
|
|
| 2 | 4 | 1 | −4 | 3 | 2 |
|
|
|
|
|
|
|
|
| 3 | 6 | 1 | 6 | −5 | 2 | 3 | −4 |
|
|
|
|
|
|
| 4 | 8 | 1 | 8 | −7 | 3 | 4 | 2 | −6 | 5 |
|
|
|
|
| 5 | 10 | 1 | 10 | −9 | 4 | 5 | 3 | −8 | 2 | 6 | −7 |
|
|
| 6 | 12 | 1 | 12 | −11 | 5 | 6 | 4 | −10 | 3 | 7 | 2 | −9 | 8 |