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A156723 as a simple table

na(n)
10
21
30
41
50
61
72
83
92
103
114
123
134
143
154
165
174
185
194
205
216
227
236
247
258
269
278
289
298
309
3110
329
3310
3411
3512
3611
3712
3813
3912
4013
4112
4213
4314
4415
4514
4615
4716
4817
4916
5017
5118
5217
5318
5417
5518
5619
5718
5819
5918
6019
6120
6221
6320
6421
6522
6621
6722
6821
6922
7023
7122
7223
7324
7425
7524
7625
7726
7827
7926
8027

[0,1,0,1,0,1,2,3,2,3,4,3,4,3,4,5,4,5,4,5,6,7,6,7,
 8,9,8,9,8,9,10,9,10,11,12,11,12,13,12,13,12,13,14,
 15,14,15,16,17,16,17,18,17,18,17,18,19,18,19,18,
 19,20,21,20,21,22,21,22,21,22,23,22,23,24,25,24,
 25,26,27,26,27]