n | a(n) |
---|---|
0 | 1 |
1 | 1 |
2 | 3 |
3 | 19 |
4 | 434 |
5 | 18142 |
6 | 1138592 |
7 | 131646240 |
8 | 22247821152 |
9 | 4990553682336 |
10 | 1661493079305216 |
11 | 729074911776673536 |
12 | 397903630707426852864 |
13 | 290086114501734871449600 |
14 | 262660633302518916820992000 |
15 | 284075108357948520100761600000 |
16 | 385808192325346588875691868160000 |
17 | 626209817056857125529475382231040000 |
[1,1,3,19,434,18142,1138592,131646240,22247821152, 4990553682336,1661493079305216,729074911776673536, 397903630707426852864,290086114501734871449600, 262660633302518916820992000, 284075108357948520100761600000, 385808192325346588875691868160000, 626209817056857125529475382231040000] |