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A141387 as a simple table

na(n)
00
11
21
32
44
52
63
77
87
93
104
1110
1212
1310
144
155
1613
1717
1817
1913
205
216
2216
2322
2424
2522
2616
276
287
2919
3027
3131
3231
3327
3419
357
368
3722
3832
3938
4040
4138
4232
4322
448
459
4625
4737
4845
4949
5049
5145
5237
5325
549
5510
5628
5742
5852
5958
6060
6158
6252
6342
6428
6510

[0,1,1,2,4,2,3,7,7,3,4,10,12,10,4,5,13,17,17,13,5,
 6,16,22,24,22,16,6,7,19,27,31,31,27,19,7,8,22,32,
 38,40,38,32,22,8,9,25,37,45,49,49,45,37,25,9,10,
 28,42,52,58,60,58,52,42,28,10]