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A253572 as a simple table

na(n)
11
21
32
41
52
64
71
82
93
108
111
122
133
144
1516
161
172
183
194
206
2132
221
232
243
254
265
278
2864
291
302
313
324
335
346
359
36128
371
382
393
404
415
426
438
4412
45256
461
472
483
494
505
516
527
539
5416
55512
561
572
583
594
605
616
627
638
6410
6518
661024
671
682
693
704
715
726
737
748
759
7612
7724
782048

[1,1,2,1,2,4,1,2,3,8,1,2,3,4,16,1,2,3,4,6,32,1,2,
 3,4,5,8,64,1,2,3,4,5,6,9,128,1,2,3,4,5,6,8,12,256,
 1,2,3,4,5,6,7,9,16,512,1,2,3,4,5,6,7,8,10,18,1024,
 1,2,3,4,5,6,7,8,9,12,24,2048]