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A106380
as a simple table
n
a(n)
0
2
1
1
2
2
3
1
4
4
5
6
6
13
7
17
8
23
9
20
10
27
11
28
12
36
13
51
14
55
[2,1,2,1,4,6,13,17,23,20,27,28,36,51,55]