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A097428 as a simple table

na(n)
20
30
41
52
63
74
85
96
107
119
129
1311
1413
1513
1614
1716
1818
1919
2021
2122
2223
2325
2426
2528
2630
2732
2832
2934
3034
3135
3240
3341
3443
3544
3647
3748
3849
3951
4053
4155
4256
4357
4460
4561
4662
4763
4867
4970
5072
5172
5274
5376
5476
5579
5681
5783
5885
5986
6088
6189
6290
6393
6497
6598
6699
67100
68105
69107
70110
71111
72112

[0,0,1,2,3,4,5,6,7,9,9,11,13,13,14,16,18,19,21,22,
 23,25,26,28,30,32,32,34,34,35,40,41,43,44,47,48,
 49,51,53,55,56,57,60,61,62,63,67,70,72,72,74,76,
 76,79,81,83,85,86,88,89,90,93,97,98,99,100,105,
 107,110,111,112]