n | a(n) |
---|---|
0 | 1 |
1 | 0 |
2 | 12 |
3 | 48 |
4 | 540 |
5 | 4320 |
6 | 42240 |
7 | 403200 |
8 | 4038300 |
9 | 40958400 |
10 | 423550512 |
11 | 4434978240 |
12 | 46982827584 |
13 | 502437551616 |
14 | 5417597053440 |
15 | 58831951546368 |
16 | 642874989479580 |
17 | 7063600894137216 |
18 | 77991775777488144 |
19 | 864910651813116480 |
[1,0,12,48,540,4320,42240,403200,4038300,40958400, 423550512,4434978240,46982827584,502437551616, 5417597053440,58831951546368,642874989479580, 7063600894137216,77991775777488144, 864910651813116480] |