n | a(n) |
---|---|
1 | 1 |
2 | 2 |
3 | 3 |
4 | 6 |
5 | 15 |
6 | 0 |
7 | 315 |
8 | 1890 |
9 | -82215 |
10 | 708750 |
11 | 41008275 |
12 | -1385549550 |
13 | -33403344975 |
14 | 3426898600125 |
15 | 26529571443375 |
16 | -13516476003780750 |
17 | 157765729690193625 |
18 | 84230651703487038750 |
19 | -3280917943856839411125 |
20 | -799561865724400084556250 |
21 | 62859004972802312944044375 |
[1,2,3,6,15,0,315,1890,-82215,708750,41008275, -1385549550,-33403344975,3426898600125, 26529571443375,-13516476003780750, 157765729690193625,84230651703487038750, -3280917943856839411125,-799561865724400084556250, 62859004972802312944044375] |