n | a(n) |
---|---|
1 | 0 |
2 | 4 |
3 | 64 |
4 | 2880 |
5 | 208896 |
6 | 23193600 |
7 | 3640688640 |
8 | 768126320640 |
9 | 209688566169600 |
10 | 71921062285148160 |
11 | 30278182590480384000 |
12 | 15350836256712740044800 |
13 | 9225766813653105691852800 |
14 | 6485670333458406942179328000 |
15 | 5272823572160895949091320627200 |
[0,4,64,2880,208896,23193600,3640688640, 768126320640,209688566169600,71921062285148160, 30278182590480384000,15350836256712740044800, 9225766813653105691852800, 6485670333458406942179328000, 5272823572160895949091320627200] |