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A174665 as a simple table

na(n)
01
12
23
31
46
51
62
715
81
92
103
111
1242
131
142
153
161
176
181
192
20123
211
222
233
241
256
261
272
2815
291
302
313
321
33366
341
352
363
371
386
391
402
4115
421
432
443
451
4642
471
482
493
501
516
521
532

[1,2,3,1,6,1,2,15,1,2,3,1,42,1,2,3,1,6,1,2,123,1,
 2,3,1,6,1,2,15,1,2,3,1,366,1,2,3,1,6,1,2,15,1,2,3,
 1,42,1,2,3,1,6,1,2]