n | a(n) |
---|---|
0 | 0 |
1 | -1 |
2 | 8 |
3 | -56 |
4 | 385 |
5 | -2640 |
6 | 18096 |
7 | -124033 |
8 | 850136 |
9 | -5826920 |
10 | 39938305 |
11 | -273741216 |
12 | 1876250208 |
13 | -12860010241 |
14 | 88143821480 |
15 | -604146740120 |
16 | 4140883359361 |
17 | -28382036775408 |
18 | 194533374068496 |
19 | -1333351581704065 |
20 | 9138927697859960 |
[0,-1,8,-56,385,-2640,18096,-124033,850136, -5826920,39938305,-273741216,1876250208, -12860010241,88143821480,-604146740120, 4140883359361,-28382036775408,194533374068496, -1333351581704065,9138927697859960] |