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A166142 as a simple table

na(n)
11
21
31
41
51
66
71
81
91
1010
111
126
131
1414
1515
161
171
186
191
2010
2121
2222
231
246
251
2626
271
2814
291
30900
311
321
3333
3434
3535
366
371
3838
3939
4010
411
421764
431
4422
4515
4646
471
486
491
5010
5151
5226
531
546
5555
5614
5757
5858
591
60900
611
6262
6321
641
6565
664356
671
6834
6969
704900
711
726
731
7474
7515
7638
7777
786084
791
8010

[1,1,1,1,1,6,1,1,1,10,1,6,1,14,15,1,1,6,1,10,21,
 22,1,6,1,26,1,14,1,900,1,1,33,34,35,6,1,38,39,10,
 1,1764,1,22,15,46,1,6,1,10,51,26,1,6,55,14,57,58,
 1,900,1,62,21,1,65,4356,1,34,69,4900,1,6,1,74,15,
 38,77,6084,1,10]