n | a(n) |
---|---|
0 | 1 |
1 | -1 |
2 | -8 |
3 | -46 |
4 | 64 |
5 | 7280 |
6 | 118720 |
7 | 406160 |
8 | -35578880 |
9 | -1156775680 |
10 | -12796467200 |
11 | 444964083200 |
12 | 27457634713600 |
13 | 594958346547200 |
14 | -9096689344716800 |
15 | -1258068242084608000 |
16 | -45330583283597312000 |
17 | 24150498582339584000 |
18 | 95678058298287259648000 |
19 | 5379182782796767182848000 |
[1,-1,-8,-46,64,7280,118720,406160,-35578880, -1156775680,-12796467200,444964083200, 27457634713600,594958346547200,-9096689344716800, -1258068242084608000,-45330583283597312000, 24150498582339584000,95678058298287259648000, 5379182782796767182848000] |