n | a(n) |
---|---|
0 | 0 |
1 | 1 |
2 | 4 |
3 | 24 |
4 | 288 |
5 | 4800 |
6 | 103680 |
7 | 2741760 |
8 | 85800960 |
9 | 3100446720 |
10 | 127037030400 |
11 | 5819550105600 |
12 | 294727768473600 |
13 | 16350861400473600 |
14 | 986127353590579200 |
15 | 64238655955009536000 |
16 | 4495021381191204864000 |
17 | 336249161369543245824000 |
[0,1,4,24,288,4800,103680,2741760,85800960, 3100446720,127037030400,5819550105600, 294727768473600,16350861400473600, 986127353590579200,64238655955009536000, 4495021381191204864000,336249161369543245824000] |