A217147 - OEIS

A217147 as a simple table

n	a(n)
1	2
2	3
3	5
4	7
5	11
6	13
7	17
8	139
9	181
10	199
11	211
12	223
13	227
14	823
15	1093
16	1373
17	2713
18	2741
19	2753
20	9041
21	9619
22	9623
23	9743
24	9749
25	21467
26	21503
27	21529
28	260017
29	6399433
30	59998271
31	1404351607

[2,3,5,7,11,13,17,139,181,199,211,223,227,823, 1093,1373,2713,2741,2753,9041,9619,9623,9743,9749, 21467,21503,21529,260017,6399433,59998271, 1404351607]