n | a(n) |
---|---|
2 | 0 |
3 | 1 |
4 | 8 |
5 | 75 |
6 | 864 |
7 | 12005 |
8 | 196608 |
9 | 3720087 |
10 | 80000000 |
11 | 1929229929 |
12 | 51597803520 |
13 | 1516443410339 |
14 | 48594782035968 |
15 | 1686702392578125 |
16 | 63050394783186944 |
17 | 2525667398391013935 |
18 | 107946249863639334912 |
19 | 4903504030649559850577 |
20 | 235929600000000000000000 |
[0,1,8,75,864,12005,196608,3720087,80000000, 1929229929,51597803520,1516443410339, 48594782035968,1686702392578125,63050394783186944, 2525667398391013935,107946249863639334912, 4903504030649559850577,235929600000000000000000] |