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A161871 as a simple table

na(n)
22
33
42
55
66
77
88
93
107
1111
1212
1313
1414
1515
162
1717
182
195
202
2121
2222
2323
2424
255
2626
2727
2828
293
302
3131
3232
3333
343
3535
366
3731
3838
3939
4040
4113
4242
4343
4444
4545
4646
4747
4848
497
5050
5151
5252
5331
5454
5553
5656
5757
5858
5959
6054
6161
6262
6363
648
6565
6666
6767
6812
6969
7070
7171
7272

[2,3,2,5,6,7,8,3,7,11,12,13,14,15,2,17,2,5,2,21,
 22,23,24,5,26,27,28,3,2,31,32,33,3,35,6,31,38,39,
 40,13,42,43,44,45,46,47,48,7,50,51,52,31,54,53,56,
 57,58,59,54,61,62,63,8,65,66,67,12,69,70,71,72]