A070847 - OEIS

A070847 as a simple table

n	a(n)
1	7
2	7
3	19
4	13
5	31
6	19
7	43
8	73
9	109
10	31
11	67
12	37
13	79
14	43
15	181
16	97
17	103
18	109
19	229
20	61
21	127
22	67
23	139
24	73
25	151
26	79
27	163
28	337
29	349
30	181
31	373
32	97
33	199
34	103
35	211
36	109
37	223
38	229
39	937
40	241
41	739
42	127
43	1033
44	397
45	271
46	139
47	283
48	433
49	883
50	151
51	307
52	157
53	3181
54	163
55	331
56	337

[7,7,19,13,31,19,43,73,109,31,67,37,79,43,181,97, 103,109,229,61,127,67,139,73,151,79,163,337,349, 181,373,97,199,103,211,109,223,229,937,241,739, 127,1033,397,271,139,283,433,883,151,307,157,3181, 163,331,337]