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A154525
as a simple table
n
a(n)
1
2
2
3
3
5
4
7
5
19
6
31
7
47
8
89
9
127
10
139
11
2251
12
3271
13
4253
14
4373
15
4549
16
5449
17
13331
18
37123
19
55291
[2,3,5,7,19,31,47,89,127,139,2251,3271,4253,4373, 4549,5449,13331,37123,55291]
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Last modified April 25 01:35 EDT 2024. Contains 371964 sequences. (Running on oeis4.)