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A087815 as a simple table

na(n)
11
22
34
45
58
69
710
812
916
1017
1118
1219
1321
1422
1524
1627
1732
1833
1934
2035
2136
2238
2339
2440
2542
2643
2745
2848
2949
3051
3154
3258
3364
3465
3566
3667
3768
3869
3971
4072
4173
4274
4376
4477
4578
4680
4781
4883
4986
5087
5188
5290
5391
5493
5596
5697
5799
58102
59106
60107
61109
62112
63116
64121
65128

[1,2,4,5,8,9,10,12,16,17,18,19,21,22,24,27,32,33,
 34,35,36,38,39,40,42,43,45,48,49,51,54,58,64,65,
 66,67,68,69,71,72,73,74,76,77,78,80,81,83,86,87,
 88,90,91,93,96,97,99,102,106,107,109,112,116,121,
 128]