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A146820
as a simple table
n
a(n)
1
1
2
1
3
1
4
1
5
1
6
1
7
1
8
1
9
1
10
1
11
3
12
3
13
9
14
9
15
23
16
23
17
59
18
59
19
317
20
317
21
2143
22
2143
23
14651
[1,1,1,1,1,1,1,1,1,1,3,3,9,9,23,23,59,59,317,317, 2143,2143,14651]
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Last modified April 23 23:26 EDT 2024. Contains 371917 sequences. (Running on oeis4.)