n | a(n) |
---|---|
1 | 1 |
2 | -2 |
3 | 2 |
4 | -8 |
5 | 56 |
6 | -496 |
7 | 3184 |
8 | -22784 |
9 | 273920 |
10 | -4539136 |
11 | 48104704 |
12 | -506000384 |
13 | 10591523840 |
14 | -204528633856 |
15 | 2888557717504 |
16 | -53417657237504 |
17 | 1249919350046720 |
18 | -28453501844586496 |
19 | 624022403933077504 |
20 | -13729309300086800384 |
21 | 372737701735949926400 |
22 | -11010228423219933085696 |
[1,-2,2,-8,56,-496,3184,-22784,273920,-4539136, 48104704,-506000384,10591523840,-204528633856, 2888557717504,-53417657237504,1249919350046720, -28453501844586496,624022403933077504, -13729309300086800384,372737701735949926400, -11010228423219933085696] |