n | a(n) |
---|---|
0 | 0 |
1 | -1 |
2 | -1 |
3 | 1 |
4 | 5 |
5 | -1 |
6 | -61 |
7 | 17 |
8 | 1385 |
9 | -31 |
10 | -50521 |
11 | 691 |
12 | 2702765 |
13 | -5461 |
14 | -199360981 |
15 | 929569 |
16 | 19391512145 |
17 | -3202291 |
18 | -2404879675441 |
19 | 221930581 |
20 | 370371188237525 |
21 | -4722116521 |
22 | -69348874393137901 |
23 | 968383680827 |
24 | 15514534163557086905 |
25 | -14717667114151 |
26 | -4087072509293123892361 |
[0,-1,-1,1,5,-1,-61,17,1385,-31,-50521,691, 2702765,-5461,-199360981,929569,19391512145, -3202291,-2404879675441,221930581,370371188237525, -4722116521,-69348874393137901,968383680827, 15514534163557086905,-14717667114151, -4087072509293123892361] |