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A324793
as a simple table
n
a(n)
1
1
2
2
3
3
4
5
5
6
6
8
7
10
8
11
9
15
10
17
11
18
12
28
13
41
14
58
15
77
[1,2,3,5,6,8,10,11,15,17,18,28,41,58,77]