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A146906
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
1
12
1
13
1
14
1
15
3
16
3
17
7
18
7
19
13
20
13
21
27
22
27
23
81
24
81
25
287
26
287
27
1153
28
1153
29
4961
30
4961
[1,1,1,1,1,1,1,1,1,1,1,1,1,1,3,3,7,7,13,13,27,27, 81,81,287,287,1153,1153,4961,4961]
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Last modified April 17 15:20 EDT 2024. Contains 371764 sequences. (Running on oeis4.)