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A124223 as a simple table

na(n)
11
21
32
41
53
62
74
81
94
105
112
123
136
141
156
164
173
189
192
208
217
225
2310
241
257
269
2710
288
2911
302
315
323
334
346
3512
361
379
386
3913
407
413
425
4315
442
4512
4614
4710
484
4911
508
5116
521
5310
5413
555
564
5716
5811
5912
6017
612
627
638
643
6515
6614
676
689
6918
701
7112
728
736
7414
754
7610
773
7818
797
8021
812
8216
835
8420
8513
8619
879
8817
8915
9011
9122

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