n | a(n) |
---|---|
1 | 0 |
2 | 9 |
3 | 18 |
4 | -306 |
5 | -3240 |
6 | 49176 |
7 | 1466640 |
8 | -13626000 |
9 | -1172668032 |
10 | 75256704 |
11 | 1392243773184 |
12 | 18426692664576 |
13 | -2213592367094784 |
[0,9,18,-306,-3240,49176,1466640,-13626000, -1172668032,75256704,1392243773184,18426692664576, -2213592367094784] |