n | a(n) |
---|---|
0 | 1 |
1 | 0 |
2 | -4 |
3 | 6 |
4 | 5 |
5 | -10 |
6 | -220 |
7 | 525 |
8 | 8485 |
9 | -46260 |
10 | -197750 |
11 | -1170125 |
12 | 86033725 |
13 | -778687650 |
14 | 1197306500 |
15 | -78964192125 |
16 | 3166659679625 |
17 | -40031792593000 |
18 | 227546036519750 |
19 | -8010745066189125 |
20 | 311948554085325625 |
[1,0,-4,6,5,-10,-220,525,8485,-46260,-197750, -1170125,86033725,-778687650,1197306500, -78964192125,3166659679625,-40031792593000, 227546036519750,-8010745066189125, 311948554085325625] |