n | a(n) |
---|---|
0 | 1 |
1 | 1 |
2 | 4 |
3 | 36 |
4 | 288 |
5 | 36000 |
6 | 800 |
7 | 1372000 |
8 | 2195200 |
9 | 2667168000 |
10 | 2667168000 |
11 | 28400004864 |
12 | 3550000608000 |
13 | 311974053431040 |
14 | 7799351335776000 |
15 | 7799351335776000 |
16 | 1134451103385600 |
17 | 306545704901339904000 |
18 | 6812126775585331200 |
19 | 233621887768698933504000 |
[1,1,4,36,288,36000,800,1372000,2195200, 2667168000,2667168000,28400004864,3550000608000, 311974053431040,7799351335776000,7799351335776000, 1134451103385600,306545704901339904000, 6812126775585331200,233621887768698933504000] |