A029973 - OEIS

A029973 as a simple table

n	a(n)
1	2
2	3
3	31
4	41
5	67
6	83
7	109
8	701
9	911
10	1091
11	1171
12	1277
13	1327
14	1667
15	1847
16	2083
17	2213
18	2293
19	2423
20	2473
21	2579
22	2659
23	2789
24	2969
25	3049
26	16001
27	16651
28	19531
29	20431
30	21481
31	23311
32	23561
33	24611
34	25391
35	26041
36	27091
37	28921
38	30871
39	31121

[2,3,31,41,67,83,109,701,911,1091,1171,1277,1327, 1667,1847,2083,2213,2293,2423,2473,2579,2659,2789, 2969,3049,16001,16651,19531,20431,21481,23311, 23561,24611,25391,26041,27091,28921,30871,31121]