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A280375 as a simple table

na(n)
11
21
31
49
51
69
71
89
928
109
111
1236
131
149
1528
1673
171
1836
191
2073
2128
229
231
24100
25126
269
2728
2873
291
30161
311
3273
3328
349
35126
36316
371
389
3928
40198
411
42252
431
4473
45153
469
471
48316
49344
50134
5128
5273
531
54252
55126
56416
5728
589
591
60441
611
629
63371
64585
65126
66252
671
6873
6928
70477
711
72828
731
749
75153
7673
77344
78252
791
80710
81757
829
831
84659
85126

[1,1,1,9,1,9,1,9,28,9,1,36,1,9,28,73,1,36,1,73,28,
 9,1,100,126,9,28,73,1,161,1,73,28,9,126,316,1,9,
 28,198,1,252,1,73,153,9,1,316,344,134,28,73,1,252,
 126,416,28,9,1,441,1,9,371,585,126,252,1,73,28,
 477,1,828,1,9,153,73,344,252,1,710,757,9,1,659,
 126]