n | a(n) |
---|---|
0 | 1 |
1 | 1 |
2 | 2 |
3 | 8 |
4 | 56 |
5 | 608 |
6 | 9440 |
7 | 198272 |
8 | 5410688 |
9 | 186043904 |
10 | 7867739648 |
11 | 401293838336 |
12 | 24290513745920 |
13 | 1721379917619200 |
14 | 141174819474169856 |
15 | 13266093250285568000 |
16 | 1415974941618255921152 |
17 | 170361620874699124637696 |
18 | 22948071824232932086513664 |
19 | 3439933090471867097102680064 |
[1,1,2,8,56,608,9440,198272,5410688,186043904, 7867739648,401293838336,24290513745920, 1721379917619200,141174819474169856, 13266093250285568000,1415974941618255921152, 170361620874699124637696, 22948071824232932086513664, 3439933090471867097102680064] |