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A291785 as a simple table

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

[1,2,3,4,5,7,7,8,9,11,11,16,13,16,16,16,17,23,19,
 23,23,23,23,47,25,27,27,47,29,47,31,32,83,83,83,
 83,37,47,47,47,41,83,43,47,-1,47,47,-1,49,-1,83,
 83,53,83,-1,-1,59,59,59,-1,61,83,83,64,83,83,67,
 -1,-1,-1,71,-1,73]

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Last modified April 24 00:30 EDT 2024. Contains 371917 sequences. (Running on oeis4.)