n | a(n) |
---|---|
0 | 0 |
1 | 0 |
2 | 2 |
3 | -3 |
4 | 16 |
5 | -50 |
6 | 248 |
7 | -504 |
8 | -1584 |
9 | 94536 |
10 | -1222848 |
11 | 16675560 |
12 | -150260640 |
13 | 1047505680 |
14 | 12037737840 |
15 | -574519410360 |
16 | 16243532175360 |
17 | -341049918471360 |
18 | 6341386354483200 |
19 | -86729688288097920 |
20 | 452837960565661440 |
21 | 31661940854577882240 |
22 | -1682428415293547953920 |
[0,0,2,-3,16,-50,248,-504,-1584,94536,-1222848, 16675560,-150260640,1047505680,12037737840, -574519410360,16243532175360,-341049918471360, 6341386354483200,-86729688288097920, 452837960565661440,31661940854577882240, -1682428415293547953920] |