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A221028 as a simple table

na(n)
11
21
31
43
53
63
74
86
96
104
114
126
137
146
154
166
1710
1811
1911
2010
216
227
2311
2414
2516
2614
2711
287
297
3013
3117
3220
3320
3417
3513
367
379
3816
3919
4021
4124
4221
4319
4416
459
4610
4716
4824
4927
5030
5130
5227
5324
5416
5510
5610
5720
5827
5931
6035
6133
6235
6331
6427
6520
6610
6712
6821
6930
7033
7140
7242
7342
7440
7533
7630
7721
7812
7913

[1,1,1,3,3,3,4,6,6,4,4,6,7,6,4,6,10,11,11,10,6,7,
 11,14,16,14,11,7,7,13,17,20,20,17,13,7,9,16,19,21,
 24,21,19,16,9,10,16,24,27,30,30,27,24,16,10,10,20,
 27,31,35,33,35,31,27,20,10,12,21,30,33,40,42,42,
 40,33,30,21,12,13]