n | a(n) |
---|---|
0 | 1 |
1 | -1 |
2 | 4 |
3 | -7 |
4 | 22 |
5 | -46 |
6 | 130 |
7 | -295 |
8 | 790 |
9 | -1870 |
10 | 4864 |
11 | -11782 |
12 | 30148 |
13 | -73984 |
14 | 187534 |
15 | -463687 |
16 | 1168870 |
17 | -2902870 |
18 | 7293640 |
19 | -18161170 |
20 | 45541492 |
21 | -113576596 |
22 | 284470564 |
23 | -710118262 |
24 | 1777323772 |
25 | -4439253196 |
26 | 11105933440 |
27 | -27749232700 |
28 | 69403169200 |
[1,-1,4,-7,22,-46,130,-295,790,-1870,4864,-11782, 30148,-73984,187534,-463687,1168870,-2902870, 7293640,-18161170,45541492,-113576596,284470564, -710118262,1777323772,-4439253196,11105933440, -27749232700,69403169200] |