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A022446 as a simple table

na(n)
01
12
23
31
44
52
65
73
81
94
106
112
127
135
143
151
168
174
189
196
202
217
2210
235
243
251
268
274
2811
299
3012
316
322
337
3410
355
3613
373
381
398
4014
414
4215
4311
449
4512
4616
476
482
497
5010
515
5217
5313
543
551
568
5714
5818
594
6019
6115
6211
639
6412
6516
6620
676
682
697
7021
7110
7222
735
7417
7513
763
771

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