n | a(n) |
---|---|
0 | 1 |
1 | -2 |
2 | 4 |
3 | -6 |
4 | 4 |
5 | 16 |
6 | -92 |
7 | 312 |
8 | -848 |
9 | 1960 |
10 | -3824 |
11 | 5760 |
12 | -3824 |
13 | -15392 |
14 | 88384 |
15 | -299616 |
16 | 814144 |
17 | -1881344 |
18 | 3669568 |
19 | -5524608 |
20 | 3657472 |
21 | 14807680 |
22 | -84909824 |
23 | 287723520 |
24 | -781639424 |
25 | 1805843968 |
26 | -3521371136 |
27 | 5298829824 |
[1,-2,4,-6,4,16,-92,312,-848,1960,-3824,5760, -3824,-15392,88384,-299616,814144,-1881344, 3669568,-5524608,3657472,14807680,-84909824, 287723520,-781639424,1805843968,-3521371136, 5298829824] |