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A168234 as a simple table

na(n)
13
23
313
413
513
613
713
813
913
1013
1139
1239
1339
1439
1539
1639
1739
1839
1939
2039
2139
2239
2339
2439
2539
2639
2739
2839
2989
3089
3189
3289
3389
3489
3589
3689
3789
3889
3989
4089
4189
4289
4389
4489
4589
4689
4789
4889
4989
5089
5189
5289
5389
5489
5589
5689
5789
5889
5989
6089
61171
62171
63171
64171
65171
66171
67171

[3,3,13,13,13,13,13,13,13,13,39,39,39,39,39,39,39,
 39,39,39,39,39,39,39,39,39,39,39,89,89,89,89,89,
 89,89,89,89,89,89,89,89,89,89,89,89,89,89,89,89,
 89,89,89,89,89,89,89,89,89,89,89,171,171,171,171,
 171,171,171]