n | a(n) |
---|---|
1 | 1 |
2 | 1 |
3 | 1 |
4 | 1 |
5 | 2 |
6 | 6 |
7 | 24 |
8 | 144 |
9 | 1464 |
10 | 26808 |
11 | 935184 |
12 | 67404816 |
13 | 10401844896 |
14 | 3508019017056 |
15 | 2732681228689152 |
16 | 5018025242941566336 |
17 | 21914759744001662937984 |
18 | 238559201308551667344338304 |
19 | 6565759935393013059564090526464 |
[1,1,1,1,2,6,24,144,1464,26808,935184,67404816, 10401844896,3508019017056,2732681228689152, 5018025242941566336,21914759744001662937984, 238559201308551667344338304, 6565759935393013059564090526464] |