n | a(n) |
---|---|
1 | 0 |
2 | 0 |
3 | 0 |
4 | 0 |
5 | 0 |
6 | 360 |
7 | 2520 |
8 | 48060 |
9 | 317520 |
10 | 4109040 |
11 | 12923136 |
12 | 238785300 |
13 | 559279980 |
14 | 7612396920 |
15 | 37864711260 |
16 | 246263046840 |
17 | 787758864480 |
18 | 13282478342640 |
19 | 27723264985920 |
20 | 387585098313300 |
21 | 1595144664456720 |
[0,0,0,0,0,360,2520,48060,317520,4109040,12923136, 238785300,559279980,7612396920,37864711260, 246263046840,787758864480,13282478342640, 27723264985920,387585098313300,1595144664456720] |