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A108728 as a simple table

na(n)
11
22
33
42
55
63
72
83
96
105
113
124
136
144
155
164
173
185
194
207
216
225
238
243
257
264
274
288
295
307
314
324
338
345
357
366
374
388
398
407
415
423
437
444
456
4610
4711
485
494
5010
516
525
536
545
555
564
579
584
598
609
616
625
638
644
6512
665
674
688
6910
705
719
727
736
748
758
765
7710
785
799
807
815
825
838
843
8511
866
876
887
899
9010

[1,2,3,2,5,3,2,3,6,5,3,4,6,4,5,4,3,5,4,7,6,5,8,3,
 7,4,4,8,5,7,4,4,8,5,7,6,4,8,8,7,5,3,7,4,6,10,11,5,
 4,10,6,5,6,5,5,4,9,4,8,9,6,5,8,4,12,5,4,8,10,5,9,
 7,6,8,8,5,10,5,9,7,5,5,8,3,11,6,6,7,9,10]