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A026254 as a simple table

na(n)
11
21
32
42
53
64
73
85
94
106
115
127
138
146
159
167
1710
188
1911
2012
219
2213
2310
2414
2515
2611
2716
2812
2917
3013
3118
3219
3314
3420
3515
3621
3716
3822
3923
4017
4124
4218
4325
4419
4526
4627
4720
4828
4921
5029
5130
5222
5331
5423
5532
5624
5733
5834
5925
6035
6126
6236
6327
6437
6538
6628

[1,1,2,2,3,4,3,5,4,6,5,7,8,6,9,7,10,8,11,12,9,13,
 10,14,15,11,16,12,17,13,18,19,14,20,15,21,16,22,
 23,17,24,18,25,19,26,27,20,28,21,29,30,22,31,23,
 32,24,33,34,25,35,26,36,27,37,38,28]