n | a(n) |
---|---|
0 | 1 |
1 | -1 |
2 | 0 |
3 | 1 |
4 | -1 |
5 | -1 |
6 | 4 |
7 | -1 |
8 | -19 |
9 | 31 |
10 | 120 |
11 | -483 |
12 | -933 |
13 | 8623 |
14 | 6748 |
15 | -189589 |
16 | 41561 |
17 | 5147391 |
18 | -6328400 |
19 | -170622599 |
20 | 394612599 |
21 | 6807529823 |
22 | -23890335372 |
23 | -322371010985 |
24 | 1564733285829 |
25 | 17884889743135 |
26 | -114158790326872 |
[1,-1,0,1,-1,-1,4,-1,-19,31,120,-483,-933,8623, 6748,-189589,41561,5147391,-6328400,-170622599, 394612599,6807529823,-23890335372,-322371010985, 1564733285829,17884889743135,-114158790326872] |