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A125504
as a simple table
n
a(n)
1
3
2
2
3
2
4
3
5
2
6
19
7
2
8
146
9
87
10
3
11
16
12
3
13
2
14
249
15
15
16
87
17
2
18
699
19
2
[3,2,2,3,2,19,2,146,87,3,16,3,2,249,15,87,2,699,2]