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A018336
as a simple table
n
a(n)
1
1
2
2
3
3
4
5
5
6
6
7
7
10
8
14
9
15
10
21
11
30
12
35
13
42
14
70
15
105
16
210
[1,2,3,5,6,7,10,14,15,21,30,35,42,70,105,210]
