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A187866 as a simple table

n a(n)
1 0
2 1
3 -1
4 1
5 -1
6 -1
7 11
8 7
9 17
10 17
11 -1
12 -1
13 11
14 19
15 41
16 -1
17 41
18 -1
19 43
20 53
21 -1
22 -1
23 29
24 41
25 -1
26 59
27 97
28 101
29 61
30 89
31 -1
32 101
33 131
34 127
35 137
36 73
37 133
38 127
39 137
40 119
41 47
42 163
43 101
44 157
45 131

[0,1,-1,1,-1,-1,11,7,17,17,-1,-1,11,19,41,-1,41,
 -1,43,53,-1,-1,29,41,-1,59,97,101,61,89,-1,101,
 131,127,137,73,133,127,137,119,47,163,101,157,131]

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Last modified July 21 06:08 EDT 2024. Contains 374463 sequences. (Running on oeis4.)