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A225557
as a simple table
n
a(n)
3
1
4
9
5
11
6
13
7
16
8
19
9
21
10
24
11
26
12
29
13
32
14
35
15
38
16
40
17
44
18
46
19
49
20
52
21
55
22
58
[1,9,11,13,16,19,21,24,26,29,32,35,38,40,44,46,49, 52,55,58]