n | a(n) |
---|---|
0 | 1 |
1 | 1 |
2 | 10 |
3 | 280 |
4 | 15400 |
5 | 1401400 |
6 | 190590400 |
7 | 36212176000 |
8 | 9161680528000 |
9 | 2977546171600000 |
10 | 1208883745669600000 |
11 | 599606337852121600000 |
12 | 356765771022012352000000 |
13 | 250806337028474683456000000 |
14 | 205661196363349240433920000000 |
15 | 194555491759728381450488320000000 |
[1,1,10,280,15400,1401400,190590400,36212176000, 9161680528000,2977546171600000, 1208883745669600000,599606337852121600000, 356765771022012352000000, 250806337028474683456000000, 205661196363349240433920000000, 194555491759728381450488320000000] |