n | a(n) |
---|---|
0 | 1 |
1 | 4 |
2 | 48 |
3 | 864 |
4 | 20880 |
5 | 632448 |
6 | 23018688 |
7 | 978179328 |
8 | 47529084096 |
9 | 2598928566336 |
10 | 157937795847936 |
11 | 10559489876375040 |
12 | 770269715428025088 |
13 | 60876094422772800000 |
14 | 5181654464327251948032 |
15 | 472584847824904789910016 |
[1,4,48,864,20880,632448,23018688,978179328, 47529084096,2598928566336,157937795847936, 10559489876375040,770269715428025088, 60876094422772800000,5181654464327251948032, 472584847824904789910016] |