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A327662
as a simple table
n
a(n)
1
1
2
2
3
2
4
3
5
4
6
5
7
7
8
10
9
14
10
21
11
31
12
45
13
66
14
99
[1,2,2,3,4,5,7,10,14,21,31,45,66,99]