n | a(n) |
---|---|
1 | -1 |
2 | 1 |
3 | 1 |
4 | -16 |
5 | 12 |
6 | -1 |
7 | 381 |
8 | -3312 |
9 | 2160 |
10 | 1 |
11 | -10496 |
12 | 1603680 |
13 | -10137600 |
14 | 6048000 |
15 | -1 |
16 | 307505 |
17 | -1022881200 |
18 | 92708406000 |
19 | -476703360000 |
20 | 266716800000 |
21 | 1 |
22 | -9316560 |
23 | 750409713900 |
24 | -1242627237734400 |
25 | 78981336366912000 |
26 | -349935855575040000 |
27 | 186313420339200000 |
28 | -1 |
[-1,1,1,-16,12,-1,381,-3312,2160,1,-10496,1603680, -10137600,6048000,-1,307505,-1022881200, 92708406000,-476703360000,266716800000,1,-9316560, 750409713900,-1242627237734400,78981336366912000, -349935855575040000,186313420339200000,-1] |