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A147505
as a simple table
n
a(n)
1
1
2
1
3
1
4
1
5
25
6
141
7
673
8
9515
9
128879
10
2409621
11
79940355
12
3359119595
13
180620195725
[1,1,1,1,25,141,673,9515,128879,2409621,79940355, 3359119595,180620195725]
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Last modified April 24 18:17 EDT 2024. Contains 371962 sequences. (Running on oeis4.)