n | a(n) |
---|---|
1 | 1 |
2 | -2 |
3 | 5 |
4 | -15 |
5 | 52 |
6 | -200 |
7 | 827 |
8 | -3596 |
9 | 16191 |
10 | -74702 |
11 | 350794 |
12 | -1669439 |
13 | 8029728 |
14 | -38963552 |
15 | 190499461 |
16 | -937550897 |
17 | 4641253152 |
18 | -23096403422 |
19 | 115475977145 |
20 | -579799302750 |
21 | 2922325238788 |
22 | -14780595276064 |
23 | 74995317703482 |
24 | -381625745964018 |
25 | 1947147485751919 |
[1,-2,5,-15,52,-200,827,-3596,16191,-74702,350794, -1669439,8029728,-38963552,190499461,-937550897, 4641253152,-23096403422,115475977145, -579799302750,2922325238788,-14780595276064, 74995317703482,-381625745964018,1947147485751919] |