n | a(n) |
---|---|
2 | 0 |
3 | 1 |
4 | 3 |
5 | 12 |
6 | 50 |
7 | 27 |
8 | 1323 |
9 | -928 |
10 | 1080 |
11 | -48525 |
12 | -3237113 |
13 | -7587864 |
14 | -31268252574 |
15 | -770720657 |
16 | -232936065 |
17 | -179731134720 |
18 | -542023437008852 |
19 | -3212744374395 |
20 | -926840515700222955 |
21 | -389358194177500 |
22 | -17858352159793110 |
[0,1,3,12,50,27,1323,-928,1080,-48525,-3237113, -7587864,-31268252574,-770720657,-232936065, -179731134720,-542023437008852,-3212744374395, -926840515700222955,-389358194177500, -17858352159793110] |