n | a(n) |
---|---|
0 | 0 |
1 | 1 |
2 | -1 |
3 | 2 |
4 | -8 |
5 | 31 |
6 | -136 |
7 | 692 |
8 | -3968 |
9 | 25261 |
10 | -176896 |
11 | 1351382 |
12 | -11184128 |
13 | 99680491 |
14 | -951878656 |
15 | 9695756072 |
16 | -104932671488 |
17 | 1202439837721 |
18 | -14544442556416 |
19 | 185185594118762 |
20 | -2475749026562048 |
21 | 34674437196568951 |
[0,1,-1,2,-8,31,-136,692,-3968,25261,-176896, 1351382,-11184128,99680491,-951878656,9695756072, -104932671488,1202439837721,-14544442556416, 185185594118762,-2475749026562048, 34674437196568951] |