A015913 - OEIS

A015913 as a simple table

n	a(n)
1	3
2	7
3	13
4	19
5	37
6	43
7	67
8	79
9	97
10	103
11	109
12	127
13	163
14	193
15	223
16	229
17	277
18	307
19	313
20	349
21	379
22	397
23	439
24	457
25	463
26	487
27	499
28	613
29	643
30	673
31	739
32	757
33	769
34	823
35	853
36	859
37	877
38	883
39	907
40	937
41	967
42	1009
43	1087
44	1093
45	1213
46	1279
47	1297
48	1303
49	1423

[3,7,13,19,37,43,67,79,97,103,109,127,163,193,223, 229,277,307,313,349,379,397,439,457,463,487,499, 613,643,673,739,757,769,823,853,859,877,883,907, 937,967,1009,1087,1093,1213,1279,1297,1303,1423]