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A066243
as a simple table
n
a(n)
2
2
3
2
4
2
5
4
6
2
7
6
8
4
9
6
10
5
11
10
12
3
13
12
14
7
15
6
16
8
17
16
18
9
19
18
20
4
21
12
22
11
23
22
24
6
25
20
26
13
27
18
28
12
29
28
30
5
[2,2,2,4,2,6,4,6,5,10,3,12,7,6,8,16,9,18,4,12,11, 22,6,20,13,18,12,28,5]