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A144222
as a simple table
n
a(n)
5
4
6
6
7
7
8
9
9
10
10
11
11
13
12
14
13
15
14
17
15
18
16
19
17
21
18
22
19
23
20
24
[4,6,7,9,10,11,13,14,15,17,18,19,21,22,23,24]