n | a(n) |
---|---|
0 | 0 |
1 | -1 |
2 | 60 |
3 | -162 |
4 | -5280 |
5 | 20250 |
6 | 128520 |
7 | -569380 |
8 | -1854720 |
9 | 9338490 |
10 | 20097000 |
11 | -113704668 |
12 | -181621440 |
13 | 1142905764 |
14 | 1447926480 |
15 | -10042461000 |
16 | -10529925120 |
17 | 79859881530 |
18 | 71384175720 |
19 | -587933314540 |
20 | -457825368000 |
21 | 4070529226764 |
[0,-1,60,-162,-5280,20250,128520,-569380,-1854720, 9338490,20097000,-113704668,-181621440,1142905764, 1447926480,-10042461000,-10529925120,79859881530, 71384175720,-587933314540,-457825368000, 4070529226764] |