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A147177
as a simple table
n
a(n)
1
1
2
1
3
1
4
1
5
1
6
5
7
25
8
93
9
439
10
1973
11
9767
12
71707
13
630927
14
7316817
15
94092203
16
1666775933
[1,1,1,1,1,5,25,93,439,1973,9767,71707,630927, 7316817,94092203,1666775933]