A040979 - OEIS

A040979 as a simple table

n	a(n)
1	11
2	31
3	41
4	61
5	71
6	131
7	151
8	191
9	211
10	241
11	251
12	271
13	281
14	311
15	331
16	401
17	421
18	431
19	461
20	521
21	541
22	571
23	631
24	641
25	661
26	691
27	751
28	761
29	821
30	881
31	911
32	941
33	971
34	1021
35	1051
36	1091
37	1151
38	1171
39	1181
40	1201
41	1291
42	1301
43	1381
44	1451
45	1471

[11,31,41,61,71,131,151,191,211,241,251,271,281, 311,331,401,421,431,461,521,541,571,631,641,661, 691,751,761,821,881,911,941,971,1021,1051,1091, 1151,1171,1181,1201,1291,1301,1381,1451,1471]