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A118487 as a simple table

na(n)
12
21
33
41
54
63
72
82
94
103
113
124
133
142
153
163
174
183
193
202
214
224
233
244
253
263
273
283
294
303
312
322
334
343
353
364
373
382
393
403
414
423
433
442
454
464
473
484
493
502
513
523
534
543
553
563
574
583
593
604
613
622
633
643
654
663
673
682
694
704
713
724
733
742
753
763
774
783
792
802
814
823
833
844
853
863
873
883
894
903
913
922
934
944
953
964
973
983
993
1003
1014

[2,1,3,1,4,3,2,2,4,3,3,4,3,2,3,3,4,3,3,2,4,4,3,4,
 3,3,3,3,4,3,2,2,4,3,3,4,3,2,3,3,4,3,3,2,4,4,3,4,3,
 2,3,3,4,3,3,3,4,3,3,4,3,2,3,3,4,3,3,2,4,4,3,4,3,2,
 3,3,4,3,2,2,4,3,3,4,3,3,3,3,4,3,3,2,4,4,3,4,3,3,3,
 3,4]