n | a(n) |
---|---|
0 | 4 |
1 | 8 |
2 | 48 |
3 | 400 |
4 | 3920 |
5 | 42336 |
6 | 487872 |
7 | 5889312 |
8 | 73616400 |
9 | 945561760 |
10 | 12412647104 |
11 | 165878102208 |
12 | 2249987591488 |
13 | 30906422960000 |
14 | 429157758816000 |
15 | 6015361252737600 |
16 | 85011208292365200 |
17 | 1210159553338375200 |
18 | 17338543308064440000 |
19 | 249857534618318088000 |
[4,8,48,400,3920,42336,487872,5889312,73616400, 945561760,12412647104,165878102208,2249987591488, 30906422960000,429157758816000,6015361252737600, 85011208292365200,1210159553338375200, 17338543308064440000,249857534618318088000] |