A249375 - OEIS

A249375 as a simple table

n	a(n)
1	7
2	19
3	31
4	61
5	79
6	193
7	283
8	367
9	373
10	421
11	499
12	547
13	619
14	733
15	751
16	883
17	997
18	1021
19	1033
20	1039
21	1069
22	1153
23	1171
24	1279
25	1399
26	1483
27	1543
28	1567
29	1753
30	1831
31	1879
32	1951
33	1999
34	2083
35	2161
36	2179
37	2251
38	2281
39	2287
40	2503
41	2671
42	2707
43	2713
44	2767
45	2797
46	2953
47	3019

[7,19,31,61,79,193,283,367,373,421,499,547,619, 733,751,883,997,1021,1033,1039,1069,1153,1171, 1279,1399,1483,1543,1567,1753,1831,1879,1951,1999, 2083,2161,2179,2251,2281,2287,2503,2671,2707,2713, 2767,2797,2953,3019]