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A173594 as a simple table

na(n)
1113
2199
3311
4337
5733
6991
71151
81181
91511
101811
113343
123373
133433
143733
157177
167577
177717
187757
1911161
2016111
2177797
2279777
2398999
2499989
25111119
26111211
27112111
28323333
29333323
30333337
31333433
32334333
33733333
34777787
35777877
36778777
37787777
38911111

[113,199,311,337,733,991,1151,1181,1511,1811,3343,
 3373,3433,3733,7177,7577,7717,7757,11161,16111,
 77797,79777,98999,99989,111119,111211,112111,
 323333,333323,333337,333433,334333,733333,777787,
 777877,778777,787777,911111]