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A252477 as a simple table

na(n)
13
21
32
41
53
61
74
82
91
105
111
123
136
143
152
162
177
182
194
208
212
224
233
242
254
2610
275
2810
295
301
315
323
3311
342
3512
364
374
386
394
404
4113
422
4313
446
4514
462
472
487
4915
507
515
5215
533
545
555
565
5716
585
598
6016
613
622
638
6417
658
662
676
683
6918
709
716
724
736
746
759
766
774
789
795
804
8120
824
8320
846
8510
867
875
8810
8921
9010
913
925

[3,1,2,1,3,1,4,2,1,5,1,3,6,3,2,2,7,2,4,8,2,4,3,2,
 4,10,5,10,5,1,5,3,11,2,12,4,4,6,4,4,13,2,13,6,14,
 2,2,7,15,7,5,15,3,5,5,5,16,5,8,16,3,2,8,17,8,2,6,
 3,18,9,6,4,6,6,9,6,4,9,5,4,20,4,20,6,10,7,5,10,21,
 10,3,5]