n | a(n) |
---|---|
0 | 1 |
1 | 0 |
2 | 2 |
3 | 9 |
4 | 112 |
5 | 1875 |
6 | 43416 |
7 | 1310946 |
8 | 49778688 |
9 | 2313362673 |
10 | 128894500000 |
11 | 8469572721533 |
12 | 647341071298560 |
13 | 56871349337125648 |
14 | 5684260661585401728 |
15 | 640631299771142578125 |
16 | 80788871646072851660800 |
17 | 11323828537291632967145015 |
18 | 1753760620207362607774290432 |
[1,0,2,9,112,1875,43416,1310946,49778688, 2313362673,128894500000,8469572721533, 647341071298560,56871349337125648, 5684260661585401728,640631299771142578125, 80788871646072851660800, 11323828537291632967145015, 1753760620207362607774290432] |