A207991 - OEIS

A207991 as a simple table

n	a(n)
1	13
2	17
3	23
4	29
5	41
6	47
7	73
8	83
9	89
10	149
11	157
12	167
13	191
14	227
15	263
16	281
17	293
18	313
19	389
20	401
21	439
22	461
23	467
24	563
25	569
26	653
27	673
28	701
29	757
30	857
31	877
32	887
33	911
34	929
35	971
36	983
37	1049
38	1069
39	1093
40	1109
41	1153
42	1213
43	1277
44	1289
45	1433
46	1451
47	1487
48	1499
49	1523
50	1637

[13,17,23,29,41,47,73,83,89,149,157,167,191,227, 263,281,293,313,389,401,439,461,467,563,569,653, 673,701,757,857,877,887,911,929,971,983,1049,1069, 1093,1109,1153,1213,1277,1289,1433,1451,1487,1499, 1523,1637]