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A288519 as a simple table

na(n)
11
22
33
441
55
661
77
883
997
10101
1111
12127
1313
14149
15151
16163
1717
18181
1919
202003
2122
224
236
2416
2510
2664
2714
28166
2929
30307
3131
329
3327
3481
3515
36183
3721
38249
39291
40401
4141
42421
4343
44443
45457
46461
4747
48487
49491
50503
5155
5225
5353
54205
55265
56305
5735
58415
5959
60601
6161

[1,2,3,41,5,61,7,83,97,101,11,127,13,149,151,163,
 17,181,19,2003,22,4,6,16,10,64,14,166,29,307,31,9,
 27,81,15,183,21,249,291,401,41,421,43,443,457,461,
 47,487,491,503,55,25,53,205,265,305,35,415,59,601,
 61]