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A028762
as a simple table
n
a(n)
1
3
2
5
3
6
4
7
5
10
6
12
7
13
8
14
9
17
10
19
11
20
12
21
13
24
14
26
15
27
16
28
17
31
18
33
19
34
20
35
21
38
22
40
23
41
24
42
25
45
26
47
27
48
[3,5,6,7,10,12,13,14,17,19,20,21,24,26,27,28,31, 33,34,35,38,40,41,42,45,47,48]