n | a(n) |
---|---|
1 | 2 |
2 | 1 |
3 | -1 |
4 | 1 |
5 | -1 |
6 | 0 |
7 | 5 |
8 | -20 |
9 | 55 |
10 | -125 |
11 | 251 |
12 | -462 |
13 | 803 |
14 | -1364 |
15 | 2365 |
16 | -4367 |
17 | 8735 |
18 | -18564 |
19 | 40409 |
20 | -87380 |
21 | 184603 |
22 | -379049 |
23 | 758099 |
24 | -1486674 |
25 | 2884775 |
26 | -5592404 |
27 | 10919089 |
28 | -21572459 |
29 | 43144919 |
30 | -87087000 |
31 | 176565485 |
32 | -357913940 |
33 | 723002335 |
34 | -1453179125 |
35 | 2906358250 |
[2,1,-1,1,-1,0,5,-20,55,-125,251,-462,803,-1364, 2365,-4367,8735,-18564,40409,-87380,184603, -379049,758099,-1486674,2884775,-5592404,10919089, -21572459,43144919,-87087000,176565485,-357913940, 723002335,-1453179125,2906358250] |