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A173630
as a simple table
n
a(n)
0
1
1
1
2
2
3
5
4
1
5
7
6
4
7
3
8
1
9
11
10
2
11
13
12
1
13
5
14
8
15
17
16
3
17
19
18
2
19
7
20
1
21
23
22
4
23
25
24
1
25
9
26
14
27
29
28
1
29
31
[1,1,2,5,1,7,4,3,1,11,2,13,1,5,8,17,3,19,2,7,1,23, 4,25,1,9,14,29,1,31]