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A051997 as a simple table

n a(n)
0 -1
1 1
2 1
3 3
4 1
5 -1
6 1
7 -3
8 1
9 -1
10 -5
11 3
12 1
13 -1
14 -3
15 3
16 -5
17 1
18 5
19 -3
20 3
21 7
22 -1
23 -1
24 -3
25 -5
26 -1
27 1
28 5
29 1
30 -7
31 -1
32 7
33 1
34 -5
35 1
36 -1
37 3
38 5
39 1
40 3
41 -3
42 13
43 5
44 3
45 1
46 -15
47 -5
48 3
49 -7
50 7
51 -3
52 3
53 13
54 -3
55 -11
56 3
57 -15
58 1
59 -1
60 -21
61 -33
62 15
63 3
64 -3
65 -5
66 5
67 -17
68 7
69 3
70 5
71 1
72 -5
73 7
74 3
75 -13

[-1,1,1,3,1,-1,1,-3,1,-1,-5,3,1,-1,-3,3,-5,1,5,-3,
 3,7,-1,-1,-3,-5,-1,1,5,1,-7,-1,7,1,-5,1,-1,3,5,1,
 3,-3,13,5,3,1,-15,-5,3,-7,7,-3,3,13,-3,-11,3,-15,
 1,-1,-21,-33,15,3,-3,-5,5,-17,7,3,5,1,-5,7,3,-13]

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Last modified October 30 18:13 EDT 2020. Contains 338090 sequences. (Running on oeis4.)