n | a(n) |
---|---|
1 | 1 |
2 | -2 |
3 | 5 |
4 | -15 |
5 | 52 |
6 | -200 |
7 | 825 |
8 | -3565 |
9 | 15900 |
10 | -72532 |
11 | 336539 |
12 | -1582593 |
13 | 7524705 |
14 | -36111810 |
15 | 174695712 |
16 | -851020367 |
17 | 4171156249 |
18 | -20555470155 |
19 | 101787990805 |
20 | -506227992092 |
21 | 2527493643612 |
22 | -12663916942984 |
23 | 63656297034920 |
24 | -320914409885850 |
25 | 1622205233276889 |
[1,-2,5,-15,52,-200,825,-3565,15900,-72532,336539, -1582593,7524705,-36111810,174695712,-851020367, 4171156249,-20555470155,101787990805, -506227992092,2527493643612,-12663916942984, 63656297034920,-320914409885850,1622205233276889] |