n | a(n) |
---|---|
0 | 0 |
1 | 1 |
2 | 3 |
3 | -12 |
4 | -140 |
5 | 420 |
6 | 13692 |
7 | -23744 |
8 | -2366784 |
9 | 126000 |
10 | 641927440 |
11 | 1306329024 |
12 | -252172135488 |
13 | -1138135788608 |
14 | 135593735484480 |
15 | 999117715814400 |
16 | -95707279587325952 |
17 | -1013737882826462976 |
18 | 85873512374909086464 |
19 | 1217682899871358735360 |
20 | -95486742904897158097920 |
[0,1,3,-12,-140,420,13692,-23744,-2366784,126000, 641927440,1306329024,-252172135488,-1138135788608, 135593735484480,999117715814400, -95707279587325952,-1013737882826462976, 85873512374909086464,1217682899871358735360, -95486742904897158097920] |