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A181370 as a simple table

na(n)
11
21
31
41
55
61
71
811
911
101
111
1219
1342
1419
151
161
1729
18110
19110
2029
211
221
2341
24235
25402
26235
2741
281
291
3055
31441
321135
331135
34441
3555
361
371
3871
39756
402709
414070
422709
43756
4471
451
461
4789
481212
495740
5011982
5111982
525740
531212
5489
551
561
57109
581845
5911124
6030618
6142510
6230618
6311124
641845
65109
661

[1,1,1,1,5,1,1,11,11,1,1,19,42,19,1,1,29,110,110,
 29,1,1,41,235,402,235,41,1,1,55,441,1135,1135,441,
 55,1,1,71,756,2709,4070,2709,756,71,1,1,89,1212,
 5740,11982,11982,5740,1212,89,1,1,109,1845,11124,
 30618,42510,30618,11124,1845,109,1]