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A341520 as a simple table

na(n)
00
11
21
32
43
52
63
75
85
93
104
117
126
137
144
155
169
1711
1811
199
205
216
2211
2310
2415
2510
2611
276
287
2913
3013
3119
3219
3313
3413
357
368
3715
3814
3923
4012
4123
4214
4315
448
459
4617
4723
4827
4921
5021
5127
5223
5317
549
5510
5619
5718
5831
5922
6027
6122
6231
6318
6419
6510
6611
6721
6821
6935
7039
7129
7229
7339
7435
7521
7621
7711
7812
7923
8022
8139
8220
8347
8430
8547
8620
8739
8822
8923
9012

[0,1,1,2,3,2,3,5,5,3,4,7,6,7,4,5,9,11,11,9,5,6,11,
 10,15,10,11,6,7,13,13,19,19,13,13,7,8,15,14,23,12,
 23,14,15,8,9,17,23,27,21,21,27,23,17,9,10,19,18,
 31,22,27,22,31,18,19,10,11,21,21,35,39,29,29,39,
 35,21,21,11,12,23,22,39,20,47,30,47,20,39,22,23,
 12]