n | a(n) |
---|---|
0 | 0 |
1 | 1 |
2 | -1 |
3 | 5 |
4 | -12 |
5 | 69 |
6 | -285 |
7 | 2001 |
8 | -12208 |
9 | 104073 |
10 | -854865 |
11 | 8723549 |
12 | -90552396 |
13 | 1088372557 |
14 | -13647385661 |
15 | 190057979177 |
16 | -2787246189120 |
17 | 44285819490065 |
18 | -742019231348865 |
19 | 13267464006201781 |
20 | -249642268776311020 |
[0,1,-1,5,-12,69,-285,2001,-12208,104073,-854865, 8723549,-90552396,1088372557,-13647385661, 190057979177,-2787246189120,44285819490065, -742019231348865,13267464006201781, -249642268776311020] |