n | a(n) |
---|---|
0 | 1 |
1 | -1 |
2 | -2 |
3 | -6 |
4 | -22 |
5 | -90 |
6 | -394 |
7 | -1806 |
8 | -8558 |
9 | -41586 |
10 | -206098 |
11 | -1037718 |
12 | -5293446 |
13 | -27297738 |
14 | -142078746 |
15 | -745387038 |
16 | -3937603038 |
17 | -20927156706 |
18 | -111818026018 |
19 | -600318853926 |
20 | -3236724317174 |
21 | -17518619320890 |
22 | -95149655201962 |
[1,-1,-2,-6,-22,-90,-394,-1806,-8558,-41586, -206098,-1037718,-5293446,-27297738,-142078746, -745387038,-3937603038,-20927156706,-111818026018, -600318853926,-3236724317174,-17518619320890, -95149655201962] |