n | a(n) |
---|---|
0 | 1 |
1 | -1 |
2 | 1 |
3 | -1 |
4 | 19 |
5 | -5 |
6 | 253 |
7 | -61 |
8 | 3319 |
9 | -1385 |
10 | 222557 |
11 | -50521 |
12 | 422152729 |
13 | -2702765 |
14 | 59833795 |
15 | -199360981 |
16 | 439264083023 |
17 | -19391512145 |
18 | 76632373664299 |
19 | -2404879675441 |
20 | 4432283799315809 |
21 | -370371188237525 |
[1,-1,1,-1,19,-5,253,-61,3319,-1385,222557,-50521, 422152729,-2702765,59833795,-199360981, 439264083023,-19391512145,76632373664299, -2404879675441,4432283799315809,-370371188237525] |