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A014530
as a simple table
n
a(n)
1
2
2
4
3
6
4
7
5
8
6
9
7
11
8
15
9
16
10
17
11
18
12
19
13
24
14
25
15
27
16
29
17
33
18
35
19
37
20
42
21
50
[2,4,6,7,8,9,11,15,16,17,18,19,24,25,27,29,33,35, 37,42,50]