n | a(n) |
---|---|
0 | 2 |
1 | -12 |
2 | 54 |
3 | -224 |
4 | 890 |
5 | -3452 |
6 | 13198 |
7 | -50016 |
8 | 188498 |
9 | -707916 |
10 | 2652678 |
11 | -9925760 |
12 | 37105802 |
13 | -138631292 |
14 | 517742494 |
15 | -1933118784 |
16 | 7216615970 |
17 | -26937891852 |
18 | 100545928278 |
19 | -375272321696 |
20 | 1400607336218 |
21 | -5227311479036 |
22 | 19509011469358 |
23 | -72809634633120 |
24 | 271731700422002 |
[2,-12,54,-224,890,-3452,13198,-50016,188498, -707916,2652678,-9925760,37105802,-138631292, 517742494,-1933118784,7216615970,-26937891852, 100545928278,-375272321696,1400607336218, -5227311479036,19509011469358,-72809634633120, 271731700422002] |