n | a(n) |
---|---|
0 | 1 |
1 | 6 |
2 | -18 |
3 | 144 |
4 | -1026 |
5 | 10368 |
6 | -91044 |
7 | 995328 |
8 | -9630090 |
9 | 109486080 |
10 | -1120744188 |
11 | 13042778112 |
12 | -138540597588 |
13 | 1637370298368 |
14 | -17853248637000 |
15 | 213325958873088 |
16 | -2371846639850586 |
17 | 28573129903177728 |
18 | -322526246042905740 |
19 | 3910007249908531200 |
20 | -44670671340291807228 |
[1,6,-18,144,-1026,10368,-91044,995328,-9630090, 109486080,-1120744188,13042778112,-138540597588, 1637370298368,-17853248637000,213325958873088, -2371846639850586,28573129903177728, -322526246042905740,3910007249908531200, -44670671340291807228] |