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A059686 as a simple table

na(n)
12
23
34
44
53
65
74
86
96
107
116
127
136
145
158
168
177
188
197
207
218
227
236
247
259
268
278
2811
2910
3011
3110
3211
3311
3410
3512
3612
3711
3810
399
409
418
4211
4310
449
4510
469
478
4811
4913
5013
5112
5211
5310
5411
5514
5615
5714
5813
5912
6014
6113
6212
6313
6413
6514
6614
6713
6812
6911
7010
719
7215
7314
7413
7514
7613
7713
7817
7916
8017

[2,3,4,4,3,5,4,6,6,7,6,7,6,5,8,8,7,8,7,7,8,7,6,7,
 9,8,8,11,10,11,10,11,11,10,12,12,11,10,9,9,8,11,
 10,9,10,9,8,11,13,13,12,11,10,11,14,15,14,13,12,
 14,13,12,13,13,14,14,13,12,11,10,9,15,14,13,14,13,
 13,17,16,17]