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A228179 as a simple table

na(n)
21
31
42
51
63
71
84
91
105
111
126
131
143
155
167
171
188
191
209
211
2210
231
245
257
2611
271
2812
291
3013
311
324
3311
3414
351
367
379
3815
391
4016
411
4217
431
4418
451
469
4711
4819
491
508
5113
5220
531
5421
551
5622
571
585
597
6011
6113
6217
6319
6423
651
6624
671
6825
691
7026
711
7213
7315
7427
751
7628
771
7811

[1,1,2,1,3,1,4,1,5,1,6,1,3,5,7,1,8,1,9,1,10,1,5,7,
 11,1,12,1,13,1,4,11,14,1,7,9,15,1,16,1,17,1,18,1,
 9,11,19,1,8,13,20,1,21,1,22,1,5,7,11,13,17,19,23,
 1,24,1,25,1,26,1,13,15,27,1,28,1,11]