n | a(n) |
---|---|
0 | 1 |
1 | 2 |
2 | 4 |
3 | 30 |
4 | 384 |
5 | 7300 |
6 | 186620 |
7 | 6046600 |
8 | 239321824 |
9 | 11283624600 |
10 | 622168133880 |
11 | 39555748796080 |
12 | 2867144894306352 |
13 | 234743115413228864 |
14 | 21539307881356682144 |
15 | 2200021023571489017104 |
16 | 248656258771528223642624 |
[1,2,4,30,384,7300,186620,6046600,239321824, 11283624600,622168133880,39555748796080, 2867144894306352,234743115413228864, 21539307881356682144,2200021023571489017104, 248656258771528223642624] |