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A174498
as a simple table
n
a(n)
1
1
2
1
3
2
4
2
5
1
6
4
7
2
8
1
9
1
10
1
11
1
12
4
13
1
14
4
15
2
16
2
17
1
18
1
19
2
20
3
[1,1,2,2,1,4,2,1,1,1,1,4,1,4,2,2,1,1,2,3]