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A163890 as a simple table

na(n)
01
11
22
32
46
53
63
76
86
96
103
113
126
133
146
153
161
173
183
193
201
211
222
232
244
252
262
274
284
292
304
312
324
338
348
354
364
372
382
394
402
412
422
432
448
458
464
474
484
494
508
518
524
532
544
552
564
578
584
598
602
612
622
632
646
656
666
676
6812
696
706
7112
7212
7312
746
756
7618
7718
7818
796
803
813
826
836
846
853
863
876
886
896
903
913
926
933
946
953
969
9718

[1,1,2,2,6,3,3,6,6,6,3,3,6,3,6,3,1,3,3,3,1,1,2,2,
 4,2,2,4,4,2,4,2,4,8,8,4,4,2,2,4,2,2,2,2,8,8,4,4,4,
 4,8,8,4,2,4,2,4,8,4,8,2,2,2,2,6,6,6,6,12,6,6,12,
 12,12,6,6,18,18,18,6,3,3,6,6,6,3,3,6,6,6,3,3,6,3,
 6,3,9,18]