A118496 - OEIS

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A118496 as a simple table

n	a(n)
1	2
2	3
3	5
4	7
5	11
6	31
7	71
8	101
9	701
10	941
11	971
12	991
13	9001
14	9011
15	9221
16	9521
17	9941
18	70001
19	76001
20	97001
21	99401
22	99431
23	99571
24	99989
25	940001
26	973001
27	987101
28	993401
29	997811
30	999431

[2,3,5,7,11,31,71,101,701,941,971,991,9001,9011, 9221,9521,9941,70001,76001,97001,99401,99431, 99571,99989,940001,973001,987101,993401,997811, 999431]