A069455 - OEIS

A069455 as a simple table

n	a(n)
1	31
2	43
3	61
4	73
5	229
6	241
7	271
8	283
9	313
10	349
11	463
12	523
13	571
14	601
15	619
16	643
17	661
18	859
19	883
20	1093
21	1153
22	1231
23	1279
24	1291
25	1303
26	1321
27	1429
28	1453
29	1609
30	1621
31	1669
32	1699
33	1723
34	1789
35	1999
36	2029
37	2143
38	2239
39	2269
40	2311
41	2341
42	2383

[31,43,61,73,229,241,271,283,313,349,463,523,571, 601,619,643,661,859,883,1093,1153,1231,1279,1291, 1303,1321,1429,1453,1609,1621,1669,1699,1723,1789, 1999,2029,2143,2239,2269,2311,2341,2383]