n | a(n) |
---|---|
0 | 1 |
1 | 0 |
2 | 0 |
3 | 1 |
4 | -1 |
5 | -1 |
6 | 1 |
7 | -2 |
8 | -4 |
9 | 1 |
10 | -3 |
11 | -9 |
12 | 1 |
13 | -4 |
14 | -16 |
15 | 1 |
16 | -5 |
17 | -25 |
18 | 1 |
19 | -6 |
20 | -36 |
21 | 1 |
22 | -7 |
23 | -49 |
24 | 1 |
25 | -8 |
26 | -64 |
27 | 1 |
28 | -9 |
29 | -81 |
30 | 1 |
31 | -10 |
32 | -100 |
33 | 1 |
34 | -11 |
35 | -121 |
36 | 1 |
37 | -12 |
38 | -144 |
39 | 1 |
40 | -13 |
41 | -169 |
42 | 1 |
43 | -14 |
44 | -196 |
45 | 1 |
46 | -15 |
47 | -225 |
48 | 1 |
49 | -16 |
50 | -256 |
51 | 1 |
52 | -17 |
53 | -289 |
54 | 1 |
55 | -18 |
56 | -324 |
57 | 1 |
58 | -19 |
59 | -361 |
60 | 1 |
61 | -20 |
62 | -400 |
63 | 1 |
64 | -21 |
65 | -441 |
[1,0,0,1,-1,-1,1,-2,-4,1,-3,-9,1,-4,-16,1,-5,-25, 1,-6,-36,1,-7,-49,1,-8,-64,1,-9,-81,1,-10,-100,1, -11,-121,1,-12,-144,1,-13,-169,1,-14,-196,1,-15, -225,1,-16,-256,1,-17,-289,1,-18,-324,1,-19,-361, 1,-20,-400,1,-21,-441] |