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A222818 as a simple table

na(n)
21
31
42
51
63
71
82
94
101
112
125
131
143
156
161
172
183
195
207
211
222
234
248
251
264
279
281
292
303
315
327
3310
341
352
363
375
3811
391
405
416
4212
431
442
453
464
476
489
4913
501
512
523
534
547
5511
5614
571
583
597
6015
611
622
634
645
658
6610
6711
6816
691
702
715
727
738
7417
751
763
774
786
797
809
8114
8218
831
842
853
864
876
889
8913
9019

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