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A147427
as a simple table
n
a(n)
1
1
2
1
3
1
4
1
5
5
6
13
7
25
8
49
9
161
10
793
11
4845
12
27471
13
158415
14
1126745
15
9283892
[1,1,1,1,5,13,25,49,161,793,4845,27471,158415, 1126745,9283892]