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A237435
as a simple table
n
a(n)
1
1
2
5
3
10
4
24
5
28
6
42
7
47
8
51
9
2
10
3
11
12
12
21
13
31
14
40
15
49
16
50
[1,5,10,24,28,42,47,51,2,3,12,21,31,40,49,50]