n | a(n) |
---|---|
0 | 1 |
1 | -2 |
2 | 0 |
3 | -10 |
4 | 22 |
5 | -102 |
6 | 84 |
7 | -950 |
8 | 3360 |
9 | -18006 |
10 | 21968 |
11 | -162126 |
12 | 613830 |
13 | -2772010 |
14 | 3847740 |
15 | -38669210 |
16 | 145735622 |
17 | -567469350 |
18 | 901506480 |
19 | -6688787966 |
20 | 27166965906 |
21 | -137118406226 |
22 | 234942672620 |
23 | -1425038557410 |
24 | 6527750118052 |
25 | -27227710098826 |
[1,-2,0,-10,22,-102,84,-950,3360,-18006,21968, -162126,613830,-2772010,3847740,-38669210, 145735622,-567469350,901506480,-6688787966, 27166965906,-137118406226,234942672620, -1425038557410,6527750118052,-27227710098826] |