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A081806 as a simple table

na(n)
22
33
44
55
61
77
82
96
103
1111
121
1313
145
152
164
1717
182
1919
201
214
229
2323
241
2510
2611
273
283
2929
304
3131
322
338
3415
352
362
3737
3817
3910
401
4141
422
4343
447
451
4621
4747
481
4914
502
5114
529
5353
541
556
561
5716
5827
5959
602
6161
6229
631
644
658
666
6767
6813
6920
704
7171
722
7373
7435
753
7615
774
788
7979
801
816
8239
8383
844
8512
8641
8726
885

[2,3,4,5,1,7,2,6,3,11,1,13,5,2,4,17,2,19,1,4,9,23,
 1,10,11,3,3,29,4,31,2,8,15,2,2,37,17,10,1,41,2,43,
 7,1,21,47,1,14,2,14,9,53,1,6,1,16,27,59,2,61,29,1,
 4,8,6,67,13,20,4,71,2,73,35,3,15,4,8,79,1,6,39,83,
 4,12,41,26,5]