n | a(n) |
---|---|
0 | 0 |
1 | 1 |
2 | 126 |
3 | 5796 |
4 | 186480 |
5 | 5103000 |
6 | 129230640 |
7 | 3162075840 |
8 | 76592355840 |
9 | 1863435974400 |
10 | 45950224320000 |
11 | 1155068769254400 |
12 | 29708792431718400 |
13 | 783699448602470400 |
14 | 21234672840116736000 |
15 | 591499300737945600000 |
[0,1,126,5796,186480,5103000,129230640,3162075840, 76592355840,1863435974400,45950224320000, 1155068769254400,29708792431718400, 783699448602470400,21234672840116736000, 591499300737945600000] |