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A085921
as a simple table
n
a(n)
1
1
2
2
3
3
4
5
5
6
6
8
7
10
8
11
9
14
10
16
11
17
12
18
13
19
14
21
15
22
16
24
17
25
18
29
19
30
20
32
21
33
22
34
23
35
24
37
[1,2,3,5,6,8,10,11,14,16,17,18,19,21,22,24,25,29, 30,32,33,34,35,37]