n | a(n) |
---|---|
1 | 1 |
2 | 0 |
3 | -2 |
4 | 8 |
5 | -16 |
6 | 96 |
7 | -832 |
8 | 9344 |
9 | -27648 |
10 | 238080 |
11 | -4228608 |
12 | 55812096 |
13 | -398991360 |
14 | 4930609152 |
15 | -98606039040 |
16 | 2440552022016 |
17 | -17762113880064 |
18 | 235149341884416 |
19 | -7331825098948608 |
20 | 170578782435409920 |
21 | -2009778629489197056 |
22 | 38563016760590598144 |
23 | -1278044473427380666368 |
[1,0,-2,8,-16,96,-832,9344,-27648,238080,-4228608, 55812096,-398991360,4930609152,-98606039040, 2440552022016,-17762113880064,235149341884416, -7331825098948608,170578782435409920, -2009778629489197056,38563016760590598144, -1278044473427380666368] |