A331324 - OEIS

A331324 as a simple table

n	a(n)
1	31
2	61
3	131
4	151
5	251
6	271
7	331
8	541
9	571
10	601
11	751
12	941
13	971
14	991
15	1181
16	1231
17	1291
18	1321
19	1361
20	1601
21	1621
22	1741
23	1831
24	1861
25	1901
26	2011
27	2131
28	2221
29	2251
30	2281
31	2341
32	2351
33	2371
34	2411
35	2441
36	2551
37	2671
38	2791
39	2851
40	3061
41	3121
42	3181
43	3301
44	3391
45	3511
46	3541
47	3631
48	3691
49	3761
50	3911

[31,61,131,151,251,271,331,541,571,601,751,941, 971,991,1181,1231,1291,1321,1361,1601,1621,1741, 1831,1861,1901,2011,2131,2221,2251,2281,2341,2351, 2371,2411,2441,2551,2671,2791,2851,3061,3121,3181, 3301,3391,3511,3541,3631,3691,3761,3911]