n | a(n) |
---|---|
0 | 0 |
1 | 1 |
2 | 3 |
3 | 10 |
4 | 34 |
5 | 104 |
6 | 200 |
7 | -400 |
8 | -2800 |
9 | 85120 |
10 | 2163840 |
11 | 30240000 |
12 | 285331200 |
13 | 1247769600 |
14 | -15759744000 |
15 | -392840448000 |
16 | -1587505920000 |
17 | 123384188928000 |
18 | 4345827053568000 |
19 | 82159404687360000 |
20 | 749393890172928000 |
21 | -10215518583029760000 |
22 | -570363673124044800000 |
23 | -9916595355495628800000 |
[0,1,3,10,34,104,200,-400,-2800,85120,2163840, 30240000,285331200,1247769600,-15759744000, -392840448000,-1587505920000,123384188928000, 4345827053568000,82159404687360000, 749393890172928000,-10215518583029760000, -570363673124044800000,-9916595355495628800000] |