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A173997 as a simple table

n a(n)
1 1
2 2
3 3
4 2
5 4
6 4
7 5
8 6
9 3
10 6
11 8
12 6
13 7
14 10
15 9
16 4
17 8
18 12
19 12
20 8
21 9
22 14
23 15
24 12
25 5
26 10
27 16
28 18
29 16
30 10
31 11
32 18
33 21
34 20
35 15
36 6
37 12
38 20
39 24
40 24
41 20
42 12

[1,2,3,2,4,4,5,6,3,6,8,6,7,10,9,4,8,12,12,8,9,14,
 15,12,5,10,16,18,16,10,11,18,21,20,15,6,12,20,24,
 24,20,12]

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Last modified January 27 15:14 EST 2020. Contains 331295 sequences. (Running on oeis4.)