n | a(n) |
---|---|
1 | 1 |
2 | 1 |
3 | -1 |
4 | -2 |
5 | 15 |
6 | 28 |
7 | -495 |
8 | -924 |
9 | 29393 |
10 | 55200 |
11 | -2755377 |
12 | -5206760 |
13 | 374909535 |
14 | 712318464 |
15 | -69864169375 |
16 | -133355433456 |
17 | 17088978269025 |
18 | 32747341496320 |
19 | -5311777786094241 |
20 | -10212994682100000 |
21 | 2045230826019387119 |
22 | 3943711514611814400 |
23 | -955583772509043759375 |
[1,1,-1,-2,15,28,-495,-924,29393,55200,-2755377, -5206760,374909535,712318464,-69864169375, -133355433456,17088978269025,32747341496320, -5311777786094241,-10212994682100000, 2045230826019387119,3943711514611814400, -955583772509043759375] |