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A230046 as a simple table

n a(n)
1 2
2 3
3 5
4 7
5 151
6 181
7 191
8 353
9 373
10 383
11 727
12 757
13 787
14 797
15 17971
16 19891
17 19991
18 38783
19 74747
20 75557
21 76367
22 76667
23 77477
24 77977
25 78787
26 78887
27 79697
28 79997
29 1879781
30 1895981
31 1969691
32 1987891
33 1988891
34 1998991
35 3799973
36 3899983
37 3997993
38 3998993
39 7696967

[2,3,5,7,151,181,191,353,373,383,727,757,787,797,
 17971,19891,19991,38783,74747,75557,76367,76667,
 77477,77977,78787,78887,79697,79997,1879781,
 1895981,1969691,1987891,1988891,1998991,3799973,
 3899983,3997993,3998993,7696967]

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Last modified January 24 09:32 EST 2022. Contains 350534 sequences. (Running on oeis4.)