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A286940 as a simple table

na(n)
01
11
21
33
42
57
615
713
81
942
1039
1142
1239
1342
1428
151
1642
1739
1842
1939
2042
2128
221
2342
2439
2542
2639
2735
287
2932
307
3135
327
3332
347
3535
367
3732
384
3939
4042
4139
4242
4339
4435
457
4632
477
4835
497
5032
517
5235
537
5432
554
5639
5742
5839
5942
6039
6135
627
6332
647
6535
667
6732
687
6935
707
7132
724
7328
741
7542
7639
7742
7839

[1,1,1,3,2,7,15,13,1,42,39,42,39,42,28,1,42,39,42,
 39,42,28,1,42,39,42,39,35,7,32,7,35,7,32,7,35,7,
 32,4,39,42,39,42,39,35,7,32,7,35,7,32,7,35,7,32,4,
 39,42,39,42,39,35,7,32,7,35,7,32,7,35,7,32,4,28,1,
 42,39,42,39]