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A161399 as a simple table

na(n)
11
22
31
44
55
62
71
88
99
1010
1111
124
1313
142
151
1616
1717
1818
1919
2020
2121
2222
2323
248
2525
2626
2727
284
2929
302
311
3232
3333
3434
3535
3636
3737
3838
3939
4040
4141
4242
4343
4444
459
4646
4747
4816
4949
5050
5151
5252
5353
549
555
568
5719
5858
5959
604
6161
622
631
6464
6565
6666
6767
6868
6969
7070
7171

[1,2,1,4,5,2,1,8,9,10,11,4,13,2,1,16,17,18,19,20,
 21,22,23,8,25,26,27,4,29,2,1,32,33,34,35,36,37,38,
 39,40,41,42,43,44,9,46,47,16,49,50,51,52,53,9,5,8,
 19,58,59,4,61,2,1,64,65,66,67,68,69,70,71]