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A084656
as a simple table
n
a(n)
1
0
2
1
3
1
4
1
5
1
6
3
7
3
8
5
9
11
10
15
11
27
12
54
13
94
14
181
15
369
16
731
17
1502
18
3187
[0,1,1,1,1,3,3,5,11,15,27,54,94,181,369,731,1502, 3187]