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A091293
as a simple table
n
a(n)
1
1
2
1
3
424
4
7
5
13980
6
2
7
805675056
8
15662957033
9
7
10
42
11
48957
[1,1,424,7,13980,2,805675056,15662957033,7,42, 48957]