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A061768 as a simple table

na(n)
15
211
311
411
523
623
735
839
944
1047
1159
1259
1359
1471
1571
1671
1779
1879
1989
2089
21119
22119
23119
24119
25119
26119
27119
28143
29143
30143
31143
32143
33143
34143
35179
36179
37179
38179
39179
40179
41179
42179
43179
44239
45239
46239
47239
48239
49239
50239
51239
52239
53239
54239
55239
56239

[5,11,11,11,23,23,35,39,44,47,59,59,59,71,71,71,
 79,79,89,89,119,119,119,119,119,119,119,143,143,
 143,143,143,143,143,179,179,179,179,179,179,179,
 179,179,239,239,239,239,239,239,239,239,239,239,
 239,239,239]