n | a(n) |
---|---|
0 | 1 |
1 | -7 |
2 | 21 |
3 | -79 |
4 | 279 |
5 | -997 |
6 | 3561 |
7 | -12781 |
8 | 45951 |
9 | -165355 |
10 | 595143 |
11 | -2142025 |
12 | 7709073 |
13 | -27743437 |
14 | 99840687 |
15 | -359294443 |
16 | 1292981391 |
17 | -4653011185 |
18 | 16744655841 |
19 | -60258539413 |
20 | 216850840215 |
21 | -780375582475 |
22 | 2808317778903 |
23 | -10106221816681 |
24 | 36369003278769 |
[1,-7,21,-79,279,-997,3561,-12781,45951,-165355, 595143,-2142025,7709073,-27743437,99840687, -359294443,1292981391,-4653011185,16744655841, -60258539413,216850840215,-780375582475, 2808317778903,-10106221816681,36369003278769] |