n | a(n) |
---|---|
1 | 0 |
2 | 3 |
3 | -6 |
4 | -30 |
5 | 360 |
6 | 504 |
7 | -44016 |
8 | 204048 |
9 | 8261760 |
10 | -128422272 |
11 | -1816480512 |
12 | 76562054400 |
13 | 124207469568 |
14 | -51042832542720 |
15 | 580686719698944 |
16 | 36632422458820608 |
17 | -1141184282933624832 |
18 | -23612862502431719424 |
19 | 1881307594631033978880 |
20 | 253019693533000826880 |
[0,3,-6,-30,360,504,-44016,204048,8261760, -128422272,-1816480512,76562054400,124207469568, -51042832542720,580686719698944,36632422458820608, -1141184282933624832,-23612862502431719424, 1881307594631033978880,253019693533000826880] |