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A220073 as a simple table

na(n)
11
21
32
42
51
63
73
81
92
104
114
122
131
143
155
165
173
181
192
204
216
226
234
242
251
263
275
287
297
305
313
321
332
344
356
368
378
386
394
402
411
423
435
447
459
469
477
485
493
501
512
524
536
548
5510
5610
578
586
594
602
611
623
635
647
659
6611
6711
689
697
705
713
721
732
744
756
768
7710
7812
7912
8010
818
826
834
842

[1,1,2,2,1,3,3,1,2,4,4,2,1,3,5,5,3,1,2,4,6,6,4,2,
 1,3,5,7,7,5,3,1,2,4,6,8,8,6,4,2,1,3,5,7,9,9,7,5,3,
 1,2,4,6,8,10,10,8,6,4,2,1,3,5,7,9,11,11,9,7,5,3,1,
 2,4,6,8,10,12,12,10,8,6,4,2]