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A183073
as a simple table
n
a(n)
1
2
2
3
3
5
4
7
5
13
6
17
7
19
8
31
9
43
10
61
11
79
12
89
13
107
14
127
15
193
16
311
17
331
18
349
19
389
20
521
21
557
22
577
23
607
24
631
25
647
26
1103
[2,3,5,7,13,17,19,31,43,61,79,89,107,127,193,311, 331,349,389,521,557,577,607,631,647,1103]
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Last modified April 24 11:40 EDT 2024. Contains 371936 sequences. (Running on oeis4.)