A106975 - OEIS

A106975 as a simple table

n	a(n)
1	13
2	67
3	199
4	223
5	313
6	499
7	523
8	991
9	1009
10	1021
11	1153
12	1213
13	1399
14	1483
15	1669
16	1789
17	1831
18	1861
19	1879
20	2089
21	2137
22	2287
23	2377
24	2551
25	2713
26	2797
27	2833
28	3061
29	3271
30	3319
31	3457
32	3583
33	3823
34	3853
35	3943
36	4027
37	4051
38	4177
39	4789
40	5011
41	5023

[13,67,199,223,313,499,523,991,1009,1021,1153, 1213,1399,1483,1669,1789,1831,1861,1879,2089,2137, 2287,2377,2551,2713,2797,2833,3061,3271,3319,3457, 3583,3823,3853,3943,4027,4051,4177,4789,5011,5023]