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A131100 as a simple table

na(n)
11
21
34
41
52
63
71
82
94
105
111
122
133
145
156
161
172
183
194
205
217
221
232
243
254
265
276
287
291
302
313
324
335
346
358
3610
371
382
393
404
415
426
437
448
4513
461
472
483
494
505
516
528
539
5410
5511
561
572
583
594
605
616
627
638
649
6510
6611
671
682
693
704
715
726
737
748
759
7610
7711
7813

[1,1,4,1,2,3,1,2,4,5,1,2,3,5,6,1,2,3,4,5,7,1,2,3,
 4,5,6,7,1,2,3,4,5,6,8,10,1,2,3,4,5,6,7,8,13,1,2,3,
 4,5,6,8,9,10,11,1,2,3,4,5,6,7,8,9,10,11,1,2,3,4,5,
 6,7,8,9,10,11,13]