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A178060
as a simple table
n
a(n)
0
1
1
2
2
8
3
12
4
2
5
5
6
6
7
10
8
5
9
8
10
9
11
13
12
3
13
6
14
8
15
11
16
2
17
5
18
6
19
10
20
1
[1,2,8,12,2,5,6,10,5,8,9,13,3,6,8,11,2,5,6,10,1]