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A161657 as a simple table

na(n)
22
33
44
55
610
77
88
99
1014
1111
1215
1313
1418
1516
1616
1717
1820
1919
2021
2130
2226
2323
2425
2525
2630
2727
2836
2929
3030
3131
3232
3342
3438
3536
3640
3737
3842
3948
4042
4141
4248
4343
4452
4548
4650
4747
4850
4949
5056
5160
5260
5353
5455
5564
5663
5766
5862
5959
6060
6161
6266
6370
6464
6572
6680
6767
6876
6978
7070
7171
7275
7373

[2,3,4,5,10,7,8,9,14,11,15,13,18,16,16,17,20,19,
 21,30,26,23,25,25,30,27,36,29,30,31,32,42,38,36,
 40,37,42,48,42,41,48,43,52,48,50,47,50,49,56,60,
 60,53,55,64,63,66,62,59,60,61,66,70,64,72,80,67,
 76,78,70,71,75,73]