A158085 - OEIS

A158085 as a simple table

n	a(n)
1	2
2	3
3	5
4	7
5	17
6	19
7	37
8	59
9	79
10	97
11	179
12	197
13	199
14	379
15	397
16	577
17	599
18	797
19	977
20	997
21	1979
22	1997
23	1999
24	5779
25	7759
26	7993
27	9199
28	9397
29	9739
30	9973
31	13799
32	13997
33	13999
34	17599
35	17959
36	17977
37	19597
38	19759
39	19777
40	19979

[2,3,5,7,17,19,37,59,79,97,179,197,199,379,397, 577,599,797,977,997,1979,1997,1999,5779,7759,7993, 9199,9397,9739,9973,13799,13997,13999,17599,17959, 17977,19597,19759,19777,19979]