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A351392
as a simple table
n
a(n)
3
1
4
1
5
3
6
4
7
5
8
6
9
7
10
10
11
11
12
12
13
14
14
16
15
20
16
21
17
25
18
28
19
32
20
34
21
41
22
44
23
49
24
53
[1,1,3,4,5,6,7,10,11,12,14,16,20,21,25,28,32,34, 41,44,49,53]