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A016213 as a simple table

n a(n)
0 1
1 0
2 -1
3 0
4 1
5 0
6 -1
7 0
8 1
9 0
10 -1
11 0
12 1
13 0
14 -1
15 0
16 1
17 0
18 -1
19 0
20 1
21 0
22 -1
23 0
24 1
25 0
26 -1
27 0
28 1
29 0
30 -1
31 0
32 1
33 0
34 -1
35 0
36 1
37 0
38 0
39 0
40 0
41 0
42 0
43 0
44 0
45 0
46 0
47 0
48 0
49 0
50 0
51 0
52 0
53 0
54 0
55 0
56 0
57 0
58 1
59 0
60 -1
61 0
62 1
63 0
64 -1
65 0
66 1
67 0
68 -1
69 0
70 1
71 0
72 -1
73 0
74 1
75 0
76 -1
77 0
78 1
79 0
80 -1

[1,0,-1,0,1,0,-1,0,1,0,-1,0,1,0,-1,0,1,0,-1,0,1,0,
 -1,0,1,0,-1,0,1,0,-1,0,1,0,-1,0,1,0,0,0,0,0,0,0,0,
 0,0,0,0,0,0,0,0,0,0,0,0,0,1,0,-1,0,1,0,-1,0,1,0,
 -1,0,1,0,-1,0,1,0,-1,0,1,0,-1]

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Last modified January 17 23:37 EST 2020. Contains 330995 sequences. (Running on oeis4.)