n | a(n) |
---|---|
1 | -1 |
2 | -2 |
3 | -7 |
4 | -40 |
5 | -301 |
6 | -2856 |
7 | -32299 |
8 | -416816 |
9 | -5892345 |
10 | -86464000 |
11 | -1177909711 |
12 | -8944121088 |
13 | 349846341467 |
14 | 29237270702080 |
15 | 1585383533246925 |
16 | 78578098584541184 |
17 | 3843296406581515919 |
18 | 190784066705549623296 |
[-1,-2,-7,-40,-301,-2856,-32299,-416816,-5892345, -86464000,-1177909711,-8944121088,349846341467, 29237270702080,1585383533246925,78578098584541184, 3843296406581515919,190784066705549623296] |