n | a(n) |
---|---|
1 | 1 |
2 | -1 |
3 | 3 |
4 | -12 |
5 | 55 |
6 | -273 |
7 | 1431 |
8 | -7837 |
9 | 44726 |
10 | -266381 |
11 | 1658300 |
12 | -10768609 |
13 | 72407500 |
14 | -498510748 |
15 | 3477131466 |
16 | -24461950817 |
17 | 174793982029 |
18 | -1294469021982 |
19 | 10177610535232 |
20 | -85391010070808 |
21 | 741460526149745 |
22 | -6291905077685633 |
[1,-1,3,-12,55,-273,1431,-7837,44726,-266381, 1658300,-10768609,72407500,-498510748,3477131466, -24461950817,174793982029,-1294469021982, 10177610535232,-85391010070808,741460526149745, -6291905077685633] |