n | a(n) |
---|---|
0 | 1 |
1 | 0 |
2 | 0 |
3 | 0 |
4 | 12 |
5 | -60 |
6 | 210 |
7 | -1260 |
8 | 11760 |
9 | -114912 |
10 | 1111560 |
11 | -11676720 |
12 | 138570696 |
13 | -1799232864 |
14 | 25005472128 |
15 | -371229549600 |
16 | 5885388887040 |
17 | -99270313446784 |
18 | 1773606197591232 |
19 | -33452898176207232 |
20 | 664355584657373312 |
[1,0,0,0,12,-60,210,-1260,11760,-114912,1111560, -11676720,138570696,-1799232864,25005472128, -371229549600,5885388887040,-99270313446784, 1773606197591232,-33452898176207232, 664355584657373312] |