n | a(n) |
---|---|
0 | 1 |
1 | 1 |
2 | -1 |
3 | 1 |
4 | -3 |
5 | 1 |
6 | 1 |
7 | -6 |
8 | 7 |
9 | -1 |
10 | 1 |
11 | -10 |
12 | 25 |
13 | -15 |
14 | 1 |
15 | 1 |
16 | -15 |
17 | 65 |
18 | -90 |
19 | 31 |
20 | -1 |
21 | 1 |
22 | -21 |
23 | 140 |
24 | -350 |
25 | 301 |
26 | -63 |
27 | 1 |
28 | 1 |
29 | -28 |
30 | 266 |
31 | -1050 |
32 | 1701 |
33 | -966 |
34 | 127 |
35 | -1 |
36 | 1 |
37 | -36 |
38 | 462 |
39 | -2646 |
40 | 6951 |
41 | -7770 |
42 | 3025 |
43 | -255 |
44 | 1 |
45 | 1 |
46 | -45 |
47 | 750 |
48 | -5880 |
49 | 22827 |
50 | -42525 |
51 | 34105 |
52 | -9330 |
53 | 511 |
54 | -1 |
[1,1,-1,1,-3,1,1,-6,7,-1,1,-10,25,-15,1,1,-15,65, -90,31,-1,1,-21,140,-350,301,-63,1,1,-28,266, -1050,1701,-966,127,-1,1,-36,462,-2646,6951,-7770, 3025,-255,1,1,-45,750,-5880,22827,-42525,34105, -9330,511,-1] |