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A061538 as a simple table

na(n)
11
21
31
42
51
61
71
88
93
101
111
1212
131
141
151
1664
171
1818
191
2020
211
221
231
24576
255
261
2727
2828
291
301
311
321024
331
341
351
367776
371
381
391
401600
411
421
431
4444
4545
461
471
48110592
497
5050
511
5252
531
542916
551
563136
571
581
591
603600
611
621
6363
6432768
651
661
671
6868
691
701
711
7226873856
731
741
7575
7676
771
781
791

[1,1,1,2,1,1,1,8,3,1,1,12,1,1,1,64,1,18,1,20,1,1,
 1,576,5,1,27,28,1,1,1,1024,1,1,1,7776,1,1,1,1600,
 1,1,1,44,45,1,1,110592,7,50,1,52,1,2916,1,3136,1,
 1,1,3600,1,1,63,32768,1,1,1,68,1,1,1,26873856,1,1,
 75,76,1,1,1]