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A105728 as a simple table

na(n)
11
21
32
41
55
63
71
811
911
104
111
1223
1333
1419
155
161
1747
1889
1971
2029
216
221
2395
24225
25231
26129
2741
287
291
30191
31545
32687
33489
34211
3555
368
371
38383
391281
401919
411665
42911
43321
4471
459
461
47767
482945
495119
505249
513487
521553
53463
5489
5510
561
571535
586657
5913183
6015617
6112223
626593
632479
64641
65109
6611

[1,1,2,1,5,3,1,11,11,4,1,23,33,19,5,1,47,89,71,29,
 6,1,95,225,231,129,41,7,1,191,545,687,489,211,55,
 8,1,383,1281,1919,1665,911,321,71,9,1,767,2945,
 5119,5249,3487,1553,463,89,10,1,1535,6657,13183,
 15617,12223,6593,2479,641,109,11]