n | a(n) |
---|---|
0 | 1 |
1 | -18 |
2 | -252 |
3 | -2376 |
4 | -19440 |
5 | -147744 |
6 | -1073088 |
7 | -7558272 |
8 | -52068096 |
9 | -352719360 |
10 | -2358180864 |
11 | -15600273408 |
12 | -102308769792 |
13 | -666095394816 |
14 | -4310029025280 |
15 | -27740914089984 |
16 | -177729924169728 |
17 | -1134086182797312 |
18 | -7210756923457536 |
[1,-18,-252,-2376,-19440,-147744,-1073088, -7558272,-52068096,-352719360,-2358180864, -15600273408,-102308769792,-666095394816, -4310029025280,-27740914089984,-177729924169728, -1134086182797312,-7210756923457536] |