A048417 - OEIS

A048417 as a simple table

n	a(n)
1	2
2	3
3	5
4	7
5	17
6	61
7	71
8	83
9	271
10	283
11	383
12	617
13	727
14	827
15	839
16	7283
17	16061
18	27271
19	27283
20	28283
21	28393
22	38393
23	39383
24	49393
25	60617
26	61717
27	72727
28	82727
29	83939
30	93827
31	93949
32	94949
33	161717
34	171617
35	172717
36	272717
37	282827
38	283949
39	382727

[2,3,5,7,17,61,71,83,271,283,383,617,727,827,839, 7283,16061,27271,27283,28283,28393,38393,39383, 49393,60617,61717,72727,82727,83939,93827,93949, 94949,161717,171617,172717,272717,282827,283949, 382727]