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A079881 as a simple table

na(n)
11
22
33
44
55
64
77
88
99
104
1111
128
1313
144
159
1616
1717
1827
1919
208
219
224
2323
2416
2525
264
2727
288
2929
3027
3131
3232
339
344
3525
3616
3737
384
399
4016
4141
4227
4343
448
4527
464
4747
4832
4949
50125
519
528
5353
5481
5525
5616
579
584
5959
6016
6161
624
6327
6464
6525
6627
6767
688
699
70125
7171
7232
7373
744
75125
768
7749
7827
7979
8032

[1,2,3,4,5,4,7,8,9,4,11,8,13,4,9,16,17,27,19,8,9,
 4,23,16,25,4,27,8,29,27,31,32,9,4,25,16,37,4,9,16,
 41,27,43,8,27,4,47,32,49,125,9,8,53,81,25,16,9,4,
 59,16,61,4,27,64,25,27,67,8,9,125,71,32,73,4,125,
 8,49,27,79,32]