n | a(n) |
---|---|
0 | 1 |
1 | 1 |
2 | 1 |
3 | 2 |
4 | 5 |
5 | 20 |
6 | 85 |
7 | 16 |
8 | -887 |
9 | 14096 |
10 | 145865 |
11 | -887456 |
12 | -14963507 |
13 | 126998976 |
14 | 2554796829 |
15 | -21834514688 |
16 | -556819358703 |
17 | 5067177011456 |
18 | 157094249035537 |
19 | -1485621376751104 |
20 | -55286734778859115 |
[1,1,1,2,5,20,85,16,-887,14096,145865,-887456, -14963507,126998976,2554796829,-21834514688, -556819358703,5067177011456,157094249035537, -1485621376751104,-55286734778859115] |