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A175081 as a simple table

na(n)
11
22
33
45
56
66
77
810
910
1011
1112
1212
1313
1414
1515
1617
1718
1819
1920
2021
2122
2222
2323
2424
2526
2628
2729
2830
2930
3030
3131
3233
3334
3434
3535
3637
3738
3839
3940
4041
4142
4242
4343
4444
4545
4646
4747
4848
4950
5051
5152
5253
5354
5455
5556
5656
5757
5858
5959
6060
6161
6262
6363
6465
6566
6667
6768
6869
6970
7071
7172
7273

[1,2,3,5,6,6,7,10,10,11,12,12,13,14,15,17,18,19,
 20,21,22,22,23,24,26,28,29,30,30,30,31,33,34,34,
 35,37,38,39,40,41,42,42,43,44,45,46,47,48,50,51,
 52,53,54,55,56,56,57,58,59,60,61,62,63,65,66,67,
 68,69,70,71,72,73]