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A146684
as a simple table
n
a(n)
1
1
2
1
3
1
4
1
5
1
6
1
7
1
8
1
9
17
10
17
11
57
12
57
13
265
14
265
15
2569
16
2569
17
53981
18
53981
19
1294213
20
1294213
21
32947589
[1,1,1,1,1,1,1,1,17,17,57,57,265,265,2569,2569, 53981,53981,1294213,1294213,32947589]
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Last modified September 11 16:40 EDT 2024. Contains 375836 sequences. (Running on oeis4.)