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A131400 as a simple table

na(n)
01
12
21
32
42
51
62
73
83
91
102
113
126
133
141
152
164
177
187
194
201
212
224
2311
248
2511
264
271
282
295
3012
3115
3215
3312
345
351
362
375
3817
3916
4030
4116
4217
435
441
452
466
4718
4827
4936
5036
5127
5218
536
541
552
566
5724
5828
5963
6042
6163
6228
6324
646
651
662
677
6825
6944
7071
7184
7284
7371
7444
7525
767
771

[1,2,1,2,2,1,2,3,3,1,2,3,6,3,1,2,4,7,7,4,1,2,4,11,
 8,11,4,1,2,5,12,15,15,12,5,1,2,5,17,16,30,16,17,5,
 1,2,6,18,27,36,36,27,18,6,1,2,6,24,28,63,42,63,28,
 24,6,1,2,7,25,44,71,84,84,71,44,25,7,1]