n | a(n) |
---|---|
0 | 1 |
1 | -1 |
2 | 1 |
3 | -1 |
4 | 1 |
5 | 4 |
6 | -35 |
7 | 146 |
8 | -447 |
9 | 1133 |
10 | -2464 |
11 | 4355 |
12 | -4355 |
13 | -9296 |
14 | 77078 |
15 | -314636 |
16 | 1006145 |
17 | -2738565 |
18 | 6398155 |
19 | -12175809 |
20 | 14621376 |
21 | 14828330 |
22 | -179236815 |
23 | 786257460 |
24 | -2625667395 |
25 | 7412386254 |
26 | -17983703880 |
27 | 36057065030 |
28 | -49553122730 |
29 | -14585596720 |
[1,-1,1,-1,1,4,-35,146,-447,1133,-2464,4355,-4355, -9296,77078,-314636,1006145,-2738565,6398155, -12175809,14621376,14828330,-179236815,786257460, -2625667395,7412386254,-17983703880,36057065030, -49553122730,-14585596720] |