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A091410
as a simple table
n
a(n)
1
1
2
2
3
3
4
7
5
19
6
39
7
95
8
197
9
441
10
883
11
1771
12
3543
13
7103
14
14213
15
28559
16
57119
[1,2,3,7,19,39,95,197,441,883,1771,3543,7103, 14213,28559,57119]