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A203567
as a simple table
n
a(n)
2
1
3
3
4
5
5
9
6
13
7
18
8
24
9
30
10
39
11
48
12
57
13
68
14
79
15
92
16
105
17
119
[1,3,5,9,13,18,24,30,39,48,57,68,79,92,105,119]