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A172991 as a simple table

na(n)
01
11
21
31
42
51
61
74
84
91
101
116
1211
136
141
151
168
1722
1822
198
201
211
2210
2337
2463
2537
2610
271
281
2912
3056
31136
32136
3356
3412
351
361
3714
3879
39249
40376
41249
4279
4314
441
451
4616
47106
48410
49849
50849
51410
52106
5316
541
551
5618
57137
58627
591663
602317
611663
62627
63137
6418
651
661
6720
68172
69908
702942
715371
725371
732942
74908
75172
7620
771
781
7922
80211
811261
824826
8311017
8414545
8511017
864826
871261
88211
8922
901

[1,1,1,1,2,1,1,4,4,1,1,6,11,6,1,1,8,22,22,8,1,1,
 10,37,63,37,10,1,1,12,56,136,136,56,12,1,1,14,79,
 249,376,249,79,14,1,1,16,106,410,849,849,410,106,
 16,1,1,18,137,627,1663,2317,1663,627,137,18,1,1,
 20,172,908,2942,5371,5371,2942,908,172,20,1,1,22,
 211,1261,4826,11017,14545,11017,4826,1261,211,22,
 1]