A023266 - OEIS

A023266 as a simple table

n	a(n)
1	3
2	7
3	31
4	37
5	41
6	71
7	73
8	83
9	107
10	191
11	283
12	307
13	317
14	337
15	373
16	421
17	631
18	743
19	773
20	821
21	857
22	883
23	967
24	1283
25	1297
26	1361
27	1451
28	1567
29	1571
30	1637
31	1823
32	1973
33	2137
34	2207
35	2351
36	2417
37	2677
38	2683
39	2837
40	3011
41	3083
42	3271
43	3331
44	3517
45	3571
46	3691
47	3727
48	3793
49	3877

[3,7,31,37,41,71,73,83,107,191,283,307,317,337, 373,421,631,743,773,821,857,883,967,1283,1297, 1361,1451,1567,1571,1637,1823,1973,2137,2207,2351, 2417,2677,2683,2837,3011,3083,3271,3331,3517,3571, 3691,3727,3793,3877]