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A220131 as a simple table

na(n)
01
11
213
36
435
53
646
71
835
96
1015
111
1288
131
1413
158
1635
171
1846
191
2037
216
2213
231
2488
253
2613
276
2835
291
3048
311
3235
336
3413
353
3688
371
3813
396
4037
411
4246
431
4435
458
4613
471
4888
491
5015
516
5235
531
5446
553
5635
576
5813
591
6090
611
6213
636
6435
653
6646
671
6835
696
7015
711
7288
731
7413

[1,1,13,6,35,3,46,1,35,6,15,1,88,1,13,8,35,1,46,1,
 37,6,13,1,88,3,13,6,35,1,48,1,35,6,13,3,88,1,13,6,
 37,1,46,1,35,8,13,1,88,1,15,6,35,1,46,3,35,6,13,1,
 90,1,13,6,35,3,46,1,35,6,15,1,88,1,13]