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A328687 as a simple table

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

[-1,18,27,-1,36,38,44,35,-1,26,16,24,14,35,18,-1,
 19,35,24,36,27,12,26,51,-1,39,16,37,26,25,16,22,
 23,36,19,-1,25,25,25,40,57,56,24,11,24,21,23,26,
 -1,33,47,22,40,48,22,31,31,22,29,18,16,30,26,-1,
 24]

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Last modified April 18 06:24 EDT 2024. Contains 371769 sequences. (Running on oeis4.)