A317716 - OEIS

A317716 as a simple table

n	a(n)
1	2
2	3
3	13
4	5
5	17
6	113
7	7
8	31
9	131
10	1193
11	11
12	37
13	197
14	1931
15	11939
16	19
17	71
18	199
19	3119
20	19391
21	193939
22	23
23	73
24	311
25	3779
26	19937
27	199933
28	17773937
29	29
30	79
31	337
32	7793
33	37199
34	319993
35	39371777
36	119139133
37	41
38	97
39	373
40	7937
41	39119
42	331999
43	71777393
44	133119139

[2,3,13,5,17,113,7,31,131,1193,11,37,197,1931, 11939,19,71,199,3119,19391,193939,23,73,311,3779, 19937,199933,17773937,29,79,337,7793,37199,319993, 39371777,119139133,41,97,373,7937,39119,331999, 71777393,133119139]