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A225489 as a simple table

na(n)
11
22
32
43
55
66
75
86
98
109
118
129
1312
1413
1511
1612
1717
1818
1914
2015
2121
2222
2317
2418
2523
2624
2720
2821
2927
3028
3123
3224
3332
3433
3526
3627
3736
3837
3929
4030
4138
4239
4332
4433
4542
4643
4735
4836
4948
5049
5138
5239
5352
5453
5541
5642
5753
5854
5944
6045
6157
6258
6347
6448
6565
6666
6750
6851

[1,2,2,3,5,6,5,6,8,9,8,9,12,13,11,12,17,18,14,15,
 21,22,17,18,23,24,20,21,27,28,23,24,32,33,26,27,
 36,37,29,30,38,39,32,33,42,43,35,36,48,49,38,39,
 52,53,41,42,53,54,44,45,57,58,47,48,65,66,50,51]