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A286581 as a simple table

na(n)
01
12
23
32
43
54
65
72
83
96
104
115
127
136
145
152
163
176
186
194
208
219
225
237
2410
256
265
2711
289
296
305
312
323
336
346
356
368
3712
384
398
409
419
425
4313
4413
4510
467
4710
4814
496
505
5112
5212
5311
549
5510
566
575
5815
5914
609
616
625
632
643
656
666
676
688
6912
706
718
7212
7312
744
7513
7616
779
788
799
8016
819
825
8313
8417
8513
8613
8710
8810
897
9018
9119
9212
9314
9410
9514
9620
976
985
9918
10012
10112
10212
10310
10411
1059

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