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A000480 as a simple table

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

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

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Last modified March 22 01:06 EDT 2019. Contains 321406 sequences. (Running on oeis4.)