n | a(n) |
---|---|
0 | 0 |
1 | 1 |
2 | -1 |
3 | 5 |
4 | -12 |
5 | 29 |
6 | -165 |
7 | 993 |
8 | -7056 |
9 | 62649 |
10 | -540225 |
11 | 5044445 |
12 | -56372844 |
13 | 685980437 |
14 | -8868937077 |
15 | 124034330553 |
16 | -1855540686720 |
17 | 29570974192753 |
18 | -502444027531233 |
19 | 9041323571823925 |
20 | -171561171727515820 |
21 | 3427632445624110605 |
[0,1,-1,5,-12,29,-165,993,-7056,62649,-540225, 5044445,-56372844,685980437,-8868937077, 124034330553,-1855540686720,29570974192753, -502444027531233,9041323571823925, -171561171727515820,3427632445624110605] |