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A171487 as a simple table

n a(n)
1 1
2 1
3 1
4 9
5 9
6 1
7 15
8 15
9 1
10 21
11 21
12 25
13 675
14 27
15 1
16 33
17 1155
18 35
19 39
20 39
21 1
22 45
23 45
24 49
25 2499
26 51
27 55
28 3135
29 57
30 1
31 63
32 4095
33 65
34 69
35 69
36 1
37 75
38 5775
39 77
40 81
41 81
42 85
43 7395
44 87
45 91
46 8463
47 8835
48 95
49 99
50 99
51 1
52 105
53 105
54 1
55 111
56 111
57 115
58 13455
59 13923
60 14399
61 14883
62 15375

[1,1,1,9,9,1,15,15,1,21,21,25,675,27,1,33,1155,35,
 39,39,1,45,45,49,2499,51,55,3135,57,1,63,4095,65,
 69,69,1,75,5775,77,81,81,85,7395,87,91,8463,8835,
 95,99,99,1,105,105,1,111,111,115,13455,13923,
 14399,14883,15375]

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Last modified May 4 16:04 EDT 2024. Contains 372254 sequences. (Running on oeis4.)