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A113474 as a simple table

na(n)
11
22
32
44
54
65
75
88
98
109
119
1211
1311
1412
1512
1616
1716
1817
1917
2019
2119
2220
2320
2423
2523
2624
2724
2826
2926
3027
3127
3232
3332
3433
3533
3635
3735
3836
3936
4039
4139
4240
4340
4442
4542
4643
4743
4847
4947
5048
5148
5250
5350
5451
5551
5654
5754
5855
5955
6057
6157
6258
6358
6464
6564
6665
6765
6867
6967
7068
7168
7271
7371

[1,2,2,4,4,5,5,8,8,9,9,11,11,12,12,16,16,17,17,19,
 19,20,20,23,23,24,24,26,26,27,27,32,32,33,33,35,
 35,36,36,39,39,40,40,42,42,43,43,47,47,48,48,50,
 50,51,51,54,54,55,55,57,57,58,58,64,64,65,65,67,
 67,68,68,71,71]