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A247116
as a simple table
n
a(n)
1
1
2
1
3
2
4
3
5
5
6
8
7
12
8
17
9
9
10
16
11
14
12
20
13
20
14
18
[1,1,2,3,5,8,12,17,9,16,14,20,20,18]
