n | a(n) |
---|---|
1 | 1 |
2 | -1 |
3 | 1 |
4 | 3 |
5 | -39 |
6 | 257 |
7 | -909 |
8 | -6389 |
9 | 183715 |
10 | -2326009 |
11 | 15050003 |
12 | 140089725 |
13 | -6804608381 |
14 | 130909360315 |
15 | -1286161585477 |
16 | -12952744700713 |
17 | 970148927462835 |
18 | -25588194678272039 |
19 | 347909302401071797 |
[1,-1,1,3,-39,257,-909,-6389,183715,-2326009, 15050003,140089725,-6804608381,130909360315, -1286161585477,-12952744700713,970148927462835, -25588194678272039,347909302401071797] |