n | a(n) |
---|---|
0 | 0 |
1 | 1 |
2 | 1 |
3 | 4 |
4 | 0 |
5 | 45 |
6 | -155 |
7 | 1748 |
8 | -13496 |
9 | 151169 |
10 | -1682191 |
11 | 22018412 |
12 | -307464872 |
13 | 4746159613 |
14 | -78744546907 |
15 | 1410956472396 |
16 | -27026759291728 |
17 | 552443153007777 |
18 | -11988735452427903 |
19 | 275451486233018100 |
20 | -6677966707663119664 |
[0,1,1,4,0,45,-155,1748,-13496,151169,-1682191, 22018412,-307464872,4746159613,-78744546907, 1410956472396,-27026759291728,552443153007777, -11988735452427903,275451486233018100, -6677966707663119664] |