n | a(n) |
---|---|
1 | 3 |
2 | -30 |
3 | 105 |
4 | -1260 |
5 | 3465 |
6 | -18018 |
7 | 45045 |
8 | -875160 |
9 | 2078505 |
10 | -9699690 |
11 | 22309287 |
12 | -202811700 |
13 | 456326325 |
14 | -2035917450 |
15 | 4508102925 |
16 | -158685222960 |
17 | 347123925225 |
18 | -1511010027450 |
19 | 3273855059475 |
20 | -28258538408100 |
[3,-30,105,-1260,3465,-18018,45045,-875160, 2078505,-9699690,22309287,-202811700,456326325, -2035917450,4508102925,-158685222960,347123925225, -1511010027450,3273855059475,-28258538408100] |