n | a(n) |
---|---|
1 | 1 |
2 | -1 |
3 | 1 |
4 | 4 |
5 | -38 |
6 | -78 |
7 | 5246 |
8 | -11680 |
9 | -2066056 |
10 | 22308440 |
11 | 1898577048 |
12 | -48769559680 |
13 | -3518093351728 |
14 | 174500124820560 |
15 | 11809059761527536 |
16 | -1021558531563834368 |
17 | -66133927485154902144 |
18 | 9433326815405995274624 |
19 | 578173001867228425792384 |
[1,-1,1,4,-38,-78,5246,-11680,-2066056,22308440, 1898577048,-48769559680,-3518093351728, 174500124820560,11809059761527536, -1021558531563834368,-66133927485154902144, 9433326815405995274624,578173001867228425792384] |