n | a(n) |
---|---|
1 | 3 |
2 | -3 |
3 | 8 |
4 | -21 |
5 | 48 |
6 | -116 |
7 | 312 |
8 | -831 |
9 | 2184 |
10 | -5880 |
11 | 16104 |
12 | -44336 |
13 | 122640 |
14 | -341484 |
15 | 956576 |
16 | -2690841 |
17 | 7596480 |
18 | -21522228 |
19 | 61171656 |
20 | -174342144 |
21 | 498111952 |
22 | -1426403748 |
23 | 4093181688 |
24 | -11767919276 |
25 | 33891544368 |
26 | -97764009000 |
[3,-3,8,-21,48,-116,312,-831,2184,-5880,16104, -44336,122640,-341484,956576,-2690841,7596480, -21522228,61171656,-174342144,498111952, -1426403748,4093181688,-11767919276,33891544368, -97764009000] |