n | a(n) |
---|---|
2 | 1 |
3 | -312 |
4 | -121680 |
5 | 1004000 |
6 | 37942020 |
7 | -801594864 |
8 | 6139193600 |
9 | -11831002560 |
10 | -151614128250 |
11 | 1346611783000 |
12 | -4592794000704 |
13 | 3738595861728 |
14 | 15192491492360 |
15 | 47281379454000 |
16 | -737660590018560 |
17 | 2662090686805056 |
18 | -3290770281735027 |
19 | -4884703150768920 |
[1,-312,-121680,1004000,37942020,-801594864, 6139193600,-11831002560,-151614128250, 1346611783000,-4592794000704,3738595861728, 15192491492360,47281379454000,-737660590018560, 2662090686805056,-3290770281735027, -4884703150768920] |