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A138988 as a simple table

na(n)
11
22
33
44
55
66
77
817
919
1021
1123
1225
1327
1429
1547
1650
1753
1856
1959
2062
2165
2291
2395
2499
25103
26107
27111
28115
29149
30154
31159
32164
33169
34174
35179
36221
37227
38233
39239
40245
41251
42257
43307
44314
45321
46328
47335
48342
49349
50407
51415
52423
53431
54439
55447
56455
57521
58530
59539

[1,2,3,4,5,6,7,17,19,21,23,25,27,29,47,50,53,56,
 59,62,65,91,95,99,103,107,111,115,149,154,159,164,
 169,174,179,221,227,233,239,245,251,257,307,314,
 321,328,335,342,349,407,415,423,431,439,447,455,
 521,530,539]