A231506 - OEIS

A231506 as a simple table

n	a(n)
1	7
2	13
3	19
4	53
5	71
6	101
7	107
8	139
9	173
10	199
11	223
12	229
13	281
14	293
15	397
16	463
17	557
18	569
19	673
20	787
21	809
22	839
23	953
24	1013
25	1283
26	1451
27	1559
28	1657
29	1861
30	1871
31	1877
32	1949
33	1987
34	1997
35	2213
36	2311
37	2347
38	2357
39	2377
40	2503
41	2543
42	2551
43	2593
44	2633
45	2837
46	2851
47	2939
48	2999
49	3041

[7,13,19,53,71,101,107,139,173,199,223,229,281, 293,397,463,557,569,673,787,809,839,953,1013,1283, 1451,1559,1657,1861,1871,1877,1949,1987,1997,2213, 2311,2347,2357,2377,2503,2543,2551,2593,2633,2837, 2851,2939,2999,3041]