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A117451 as a simple table

na(n)
01
10
21
31
41
53
62
73
83
93
105
114
125
135
145
157
166
177
187
197
209
218
229
239
249
2511
2610
2711
2811
2911
3013
3112
3213
3313
3413
3515
3614
3715
3815
3915
4017
4116
4217
4317
4417
4519
4618
4719
4819
4919
5021
5120
5221
5321
5421
5523
5622
5723
5823
5923
6025
6124
6225
6325
6425
6527
6626
6727
6827
6927
7029
7128
7229
7329
7429
7531
7630
7731

[1,0,1,1,1,3,2,3,3,3,5,4,5,5,5,7,6,7,7,7,9,8,9,9,
 9,11,10,11,11,11,13,12,13,13,13,15,14,15,15,15,17,
 16,17,17,17,19,18,19,19,19,21,20,21,21,21,23,22,
 23,23,23,25,24,25,25,25,27,26,27,27,27,29,28,29,
 29,29,31,30,31]