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A168361 as a simple table

n a(n)
1 2
2 -1
3 2
4 -1
5 2
6 -1
7 2
8 -1
9 2
10 -1
11 2
12 -1
13 2
14 -1
15 2
16 -1
17 2
18 -1
19 2
20 -1
21 2
22 -1
23 2
24 -1
25 2
26 -1
27 2
28 -1
29 2
30 -1
31 2
32 -1
33 2
34 -1
35 2
36 -1
37 2
38 -1
39 2
40 -1
41 2
42 -1
43 2
44 -1
45 2
46 -1
47 2
48 -1
49 2
50 -1
51 2
52 -1
53 2
54 -1
55 2
56 -1
57 2
58 -1
59 2
60 -1
61 2
62 -1
63 2
64 -1
65 2
66 -1
67 2
68 -1
69 2
70 -1
71 2
72 -1
73 2
74 -1
75 2
76 -1
77 2
78 -1
79 2
80 -1
81 2
82 -1
83 2
84 -1

[2,-1,2,-1,2,-1,2,-1,2,-1,2,-1,2,-1,2,-1,2,-1,2,
 -1,2,-1,2,-1,2,-1,2,-1,2,-1,2,-1,2,-1,2,-1,2,-1,2,
 -1,2,-1,2,-1,2,-1,2,-1,2,-1,2,-1,2,-1,2,-1,2,-1,2,
 -1,2,-1,2,-1,2,-1,2,-1,2,-1,2,-1,2,-1,2,-1,2,-1,2,
 -1,2,-1,2,-1]

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Last modified March 29 10:22 EDT 2024. Contains 371268 sequences. (Running on oeis4.)