n | a(n) |
---|---|
0 | 1 |
1 | 0 |
2 | -4 |
3 | -12 |
4 | 16 |
5 | 400 |
6 | 2208 |
7 | -448 |
8 | -131840 |
9 | -1357056 |
10 | -4820480 |
11 | 71120896 |
12 | 1537308672 |
13 | 14006460416 |
14 | 3075702784 |
15 | -2224350781440 |
16 | -41354996154368 |
17 | -359660395495424 |
18 | 1675436608585728 |
19 | 121894823709900800 |
20 | 2317859245604208640 |
21 | 20543311167964053504 |
[1,0,-4,-12,16,400,2208,-448,-131840,-1357056, -4820480,71120896,1537308672,14006460416, 3075702784,-2224350781440,-41354996154368, -359660395495424,1675436608585728, 121894823709900800,2317859245604208640, 20543311167964053504] |