n | a(n) |
---|---|
1 | 5 |
2 | 20 |
3 | 240 |
4 | 3600 |
5 | 74880 |
6 | 1857600 |
7 | 56246400 |
8 | 1965600000 |
9 | 78744960000 |
10 | 3542608742400 |
11 | 177187481856000 |
12 | 9744664849920000 |
13 | 584718747604992000 |
14 | 38006232139459584000 |
15 | 2660470029606445056000 |
[5,20,240,3600,74880,1857600,56246400,1965600000, 78744960000,3542608742400,177187481856000, 9744664849920000,584718747604992000, 38006232139459584000,2660470029606445056000] |