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A030997 as a simple table

n a(n)
1 2
2 23
3 5711
4 2357
5 711131719
6 113127131137139149
7 29313741434753
8 107109113127131137139149
9 211223227229233239241251257
10 691701709719727733739743751757
11 2329313741434753596167 

[2,23,5711,2357,711131719,113127131137139149,
 29313741434753,107109113127131137139149,
 211223227229233239241251257,
 691701709719727733739743751757,
 2329313741434753596167]

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Last modified May 6 22:51 EDT 2024. Contains 372297 sequences. (Running on oeis4.)