n | a(n) |
---|---|
0 | 1 |
1 | 0 |
2 | 1 |
3 | -1 |
4 | 5 |
5 | -11 |
6 | 43 |
7 | -127 |
8 | 489 |
9 | -1693 |
10 | 6771 |
11 | -26071 |
12 | 109693 |
13 | -457757 |
14 | 2028671 |
15 | -9039931 |
16 | 42101329 |
17 | -198411489 |
18 | 967906675 |
19 | -4791497559 |
20 | 24401815141 |
21 | -126243354637 |
22 | 669094876055 |
23 | -3603105436163 |
24 | 19818039219577 |
25 | -110721426757801 |
26 | 630419303537115 |
[1,0,1,-1,5,-11,43,-127,489,-1693,6771,-26071, 109693,-457757,2028671,-9039931,42101329, -198411489,967906675,-4791497559,24401815141, -126243354637,669094876055,-3603105436163, 19818039219577,-110721426757801,630419303537115] |