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A068871 as a simple table

n a(n)
1 1
2 11
3 31
4 41
5 61
6 71
7 101
8 121
9 131
10 151
11 181
12 191
13 211
14 241
15 251
16 271
17 281
18 311
19 331 

[1,11,31,41,61,71,101,121,131,151,181,191,211,241,
 251,271,281,311,331]

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Last modified April 24 10:11 EDT 2024. Contains 371935 sequences. (Running on oeis4.)