A040989 - OEIS

A040989 as a simple table

n	a(n)
1	31
2	41
3	61
4	71
5	101
6	131
7	151
8	181
9	191
10	211
11	251
12	271
13	281
14	311
15	331
16	421
17	431
18	491
19	521
20	541
21	571
22	601
23	631
24	641
25	661
26	691
27	701
28	751
29	761
30	821
31	941
32	971
33	991
34	1021
35	1031
36	1051
37	1061
38	1091
39	1151
40	1171
41	1201

[31,41,61,71,101,131,151,181,191,211,251,271,281, 311,331,421,431,491,521,541,571,601,631,641,661, 691,701,751,761,821,941,971,991,1021,1031,1051, 1061,1091,1151,1171,1201]