n | a(n) |
---|---|
1 | -6 |
2 | -20 |
3 | -76 |
4 | -272 |
5 | -580 |
6 | 3760 |
7 | 77324 |
8 | 896848 |
9 | 8869820 |
10 | 81550960 |
11 | 719926124 |
12 | 6196609168 |
13 | 52439953820 |
14 | 438516694960 |
15 | 3635082523724 |
16 | 29935019892688 |
17 | 245264010263420 |
18 | 2001462391659760 |
19 | 16280541150478124 |
20 | 132087583623451408 |
[-6,-20,-76,-272,-580,3760,77324,896848,8869820, 81550960,719926124,6196609168,52439953820, 438516694960,3635082523724,29935019892688, 245264010263420,2001462391659760, 16280541150478124,132087583623451408] |