n | a(n) |
---|---|
1 | 2 |
2 | 16 |
3 | 168 |
4 | 1920 |
5 | 23360 |
6 | 296448 |
7 | 3880576 |
8 | 52015104 |
9 | 710360064 |
10 | 9849036800 |
11 | 138270871552 |
12 | 1961643540480 |
13 | 28079294676992 |
14 | 405035709890560 |
15 | 5881791327928320 |
16 | 85917550984036352 |
17 | 1261588096997916672 |
18 | 18611082818941353984 |
[2,16,168,1920,23360,296448,3880576,52015104, 710360064,9849036800,138270871552,1961643540480, 28079294676992,405035709890560,5881791327928320, 85917550984036352,1261588096997916672, 18611082818941353984] |