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A016538 as a simple table

na(n)
12
22
31
45
52
630
710
82
91
101
111
121
1338
141
151
161
171
186
192
202
211
2226
231
241
252
262
272
281
2942
302
312
321
335
342
352
367
371
381
392
405
411
421
433
441
451
461
471
481
494
501
512
522
531
541
555
562
573
581
591
601
612
629
631
641
652
661
673
682
691
701
717
722
733
742
752
762
771
7821
791

[2,2,1,5,2,30,10,2,1,1,1,1,38,1,1,1,1,6,2,2,1,26,
 1,1,2,2,2,1,42,2,2,1,5,2,2,7,1,1,2,5,1,1,3,1,1,1,
 1,1,4,1,2,2,1,1,5,2,3,1,1,1,2,9,1,1,2,1,3,2,1,1,7,
 2,3,2,2,2,1,21,1]