A139860 - OEIS

A139860 as a simple table

n	a(n)
1	13
2	37
3	157
4	277
5	373
6	397
7	613
8	733
9	757
10	853
11	877
12	997
13	1093
14	1117
15	1213
16	1237
17	1453
18	1597
19	1693
20	1933
21	2053
22	2293
23	2437
24	2557
25	2677
26	2797
27	2917
28	3037
29	3253
30	3373
31	3517
32	3613
33	3637
34	3733
35	3853
36	3877
37	4093
38	4357
39	4597
40	4813
41	4933
42	4957

[13,37,157,277,373,397,613,733,757,853,877,997, 1093,1117,1213,1237,1453,1597,1693,1933,2053,2293, 2437,2557,2677,2797,2917,3037,3253,3373,3517,3613, 3637,3733,3853,3877,4093,4357,4597,4813,4933,4957]