n | a(n) |
---|---|
0 | 1 |
1 | -1 |
2 | -3 |
3 | -9 |
4 | -18 |
5 | -54 |
6 | 69 |
7 | 513 |
8 | 4968 |
9 | 14904 |
10 | 321 |
11 | 33588 |
12 | 257580 |
13 | 502200 |
14 | 1506600 |
15 | 160839 |
16 | 2808945 |
17 | 20019960 |
18 | 162100440 |
19 | 796330440 |
20 | 2388991320 |
21 | 1416951 |
22 | -41843142 |
23 | -376375410 |
24 | -9465715080 |
25 | -144916218720 |
26 | -1289959784640 |
27 | -3869879353920 |
28 | -388946691 |
29 | -6519779667 |
[1,-1,-3,-9,-18,-54,69,513,4968,14904,321,33588, 257580,502200,1506600,160839,2808945,20019960, 162100440,796330440,2388991320,1416951,-41843142, -376375410,-9465715080,-144916218720, -1289959784640,-3869879353920,-388946691, -6519779667] |