n | a(n) |
---|---|
0 | 0 |
1 | 0 |
2 | 0 |
3 | 0 |
4 | 0 |
5 | 120 |
6 | 2880 |
7 | 70560 |
8 | 1935360 |
9 | 59875200 |
10 | 2075673600 |
11 | 79913433600 |
12 | 3387499315200 |
13 | 156883562035200 |
14 | 7884404656128000 |
15 | 427447366714368000 |
16 | 24869664972472320000 |
17 | 1545805113445232640000 |
18 | 102232975285590589440000 |
[0,0,0,0,0,120,2880,70560,1935360,59875200, 2075673600,79913433600,3387499315200, 156883562035200,7884404656128000, 427447366714368000,24869664972472320000, 1545805113445232640000,102232975285590589440000] |