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A116920 as a simple table

na(n)
01
12
24
35
49
58
68
79
811
920
1012
1113
1225
1318
1416
1517
1633
1720
1820
1921
2023
2144
2224
2325
2429
2554
2628
2729
2857
2932
3032
3133
3235
3338
3436
3537
3673
37110
3840
3941
4081
4144
4244
4345
4447
4592
4648
4749
4855
4954
5052
5153
52105
5356
5456
5557
5659
57116
5860
5961
60121
6172
6264
6365
6469
6568
6668
6769
6871
69140
7072

[1,2,4,5,9,8,8,9,11,20,12,13,25,18,16,17,33,20,20,
 21,23,44,24,25,29,54,28,29,57,32,32,33,35,38,36,
 37,73,110,40,41,81,44,44,45,47,92,48,49,55,54,52,
 53,105,56,56,57,59,116,60,61,121,72,64,65,69,68,
 68,69,71,140,72]