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A085890
as a simple table
n
a(n)
1
1
2
2
3
3
4
4
5
5
6
6
7
7
8
8
9
9
10
10
11
21
12
32
13
54
14
98
15
210
16
432
[1,2,3,4,5,6,7,8,9,10,21,32,54,98,210,432]