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A018429
as a simple table
n
a(n)
1
1
2
2
3
3
4
5
5
6
6
10
7
13
8
15
9
26
10
30
11
39
12
65
13
78
14
130
15
195
16
390
[1,2,3,5,6,10,13,15,26,30,39,65,78,130,195,390]