n | a(n) |
---|---|
0 | 1 |
1 | 1 |
2 | -1 |
3 | 3 |
4 | -13 |
5 | 71 |
6 | -461 |
7 | 3447 |
8 | -29093 |
9 | 273343 |
10 | -2829325 |
11 | 31998903 |
12 | -392743957 |
13 | 5201061455 |
14 | -73943424413 |
15 | 1123596277863 |
16 | -18176728317413 |
17 | 311951144828863 |
18 | -5661698774848621 |
19 | 108355864447215063 |
20 | -2181096921557783605 |
[1,1,-1,3,-13,71,-461,3447,-29093,273343,-2829325, 31998903,-392743957,5201061455,-73943424413, 1123596277863,-18176728317413,311951144828863, -5661698774848621,108355864447215063, -2181096921557783605] |