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A274847
as a simple table
n
a(n)
1
1
2
1
3
1
4
2
5
2
6
5
7
1
8
7
9
2
10
12
11
4
12
11
13
1
14
17
15
8
16
22
17
3
18
22
19
5
[1,1,1,2,2,5,1,7,2,12,4,11,1,17,8,22,3,22,5]