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A087876 as a simple table

na(n)
11
21
31
41
52
63
74
84
94
105
116
126
137
147
157
167
178
189
1910
2010
2110
2210
2311
2411
2511
2611
2711
2812
2913
3013
3113
3214
3315
3415
3515
3615
3715
3816
3916
4016
4116
4216
4317
4418
4518
4618
4719
4819
4919
5019
5120
5221
5321
5421
5521
5621
5721
5821
5922
6022
6123
6223
6323
6423
6523
6624
6725
6825
6926
7026
7126
7226
7327
7427
7527

[1,1,1,1,2,3,4,4,4,5,6,6,7,7,7,7,8,9,10,10,10,10,
 11,11,11,11,11,12,13,13,13,14,15,15,15,15,15,16,
 16,16,16,16,17,18,18,18,19,19,19,19,20,21,21,21,
 21,21,21,21,22,22,23,23,23,23,23,24,25,25,26,26,
 26,26,27,27,27]