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A053627 as a simple table

na(n)
11
22
33
44
55
63
77
88
99
1010
1111
126
1313
1414
155
1616
1717
189
1919
208
2121
2222
2323
2412
2525
2626
2727
287
2929
3010
3131
3232
3333
3434
3520
3618
3737
3838
3939
4016
4141
4212
4343
4444
459
4646
4747
4824
4949
5050
5151
5252
5353
5427
5555
5614
5757
5858
5959
6020
6161
6262
6328
6464
6565
6611
6767
6868
6969
7040
7171
7216
7373
7474

[1,2,3,4,5,3,7,8,9,10,11,6,13,14,5,16,17,9,19,8,
 21,22,23,12,25,26,27,7,29,10,31,32,33,34,20,18,37,
 38,39,16,41,12,43,44,9,46,47,24,49,50,51,52,53,27,
 55,14,57,58,59,20,61,62,28,64,65,11,67,68,69,40,
 71,16,73,74]