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A090489
as a simple table
n
a(n)
2
5
3
3
4
3
5
4
6
4
7
5
8
4
9
5
10
7
11
6
12
8
13
8
14
7
15
8
16
9
17
10
18
9
19
11
20
11
21
10
22
11
23
11
24
12
25
14
26
14
27
13
28
13
29
12
30
12
[5,3,3,4,4,5,4,5,7,6,8,8,7,8,9,10,9,11,11,10,11, 11,12,14,14,13,13,12,12]