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A147260
as a simple table
n
a(n)
1
1
2
1
3
1
4
1
5
5
6
17
7
49
8
213
9
1189
10
5181
11
36191
12
306061
13
3589171
[1,1,1,1,5,17,49,213,1189,5181,36191,306061, 3589171]