n | a(n) |
---|---|
1 | 0 |
2 | 1 |
3 | 15 |
4 | 240 |
5 | 6040 |
6 | 217365 |
7 | 10651011 |
8 | 681667840 |
9 | 55215038880 |
10 | 5521504648185 |
11 | 668102052847735 |
12 | 96206695728917136 |
13 | 16258931576714668920 |
14 | 3186750589054271109325 |
15 | 717018882536990087693835 |
[0,1,15,240,6040,217365,10651011,681667840, 55215038880,5521504648185,668102052847735, 96206695728917136,16258931576714668920, 3186750589054271109325,717018882536990087693835] |