A076609 - OEIS

A076609 as a simple table

n	a(n)
1	2
2	3
3	5
4	7
5	121
6	131
7	151
8	171
9	222
10	232
11	252
12	272
13	323
14	333
15	353
16	373
17	424
18	434
19	454
20	474
21	525
22	535
23	555
24	575
25	626
26	636
27	656
28	676
29	727
30	737
31	757
32	777
33	828
34	838
35	858
36	878
37	929
38	939
39	959
40	979
41	10201
42	10301
43	10501
44	10701
45	11211
46	11311
47	11511
48	11711
49	12221

[2,3,5,7,121,131,151,171,222,232,252,272,323,333, 353,373,424,434,454,474,525,535,555,575,626,636, 656,676,727,737,757,777,828,838,858,878,929,939, 959,979,10201,10301,10501,10701,11211,11311,11511, 11711,12221]