n | a(n) |
---|---|
0 | 0 |
1 | 0 |
2 | 0 |
3 | 1 |
4 | 24 |
5 | 360 |
6 | 4320 |
7 | 45360 |
8 | 435456 |
9 | 3919104 |
10 | 33592320 |
11 | 277136640 |
12 | 2217093120 |
13 | 17293326336 |
14 | 132058128384 |
15 | 990435962880 |
16 | 7313988648960 |
17 | 53287631585280 |
18 | 383670947414016 |
19 | 2733655500324864 |
20 | 19296391766999040 |
21 | 135074742368993280 |
[0,0,0,1,24,360,4320,45360,435456,3919104, 33592320,277136640,2217093120,17293326336, 132058128384,990435962880,7313988648960, 53287631585280,383670947414016,2733655500324864, 19296391766999040,135074742368993280] |