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A187821 as a simple table

na(n)
01
11
21
31
41
52
62
72
82
93
104
113
124
135
146
155
166
177
189
197
209
2111
2212
2311
2412
2515
2617
2715
2817
2921
3022
3121
3222
3327
3429
3527
3629
3736
3836
3936
4036
4145
4247
4345
4447
4557
4658
4757
4858
4969
5073
5169
5273
5386
5488
5586
5688
57103
58109
59103
60109
61125
62130
63125
64130
65147
66157
67147
68157
69176
70184
71176
72184
73205
74220
75205
76220
77241
78256
79241
80256

[1,1,1,1,1,2,2,2,2,3,4,3,4,5,6,5,6,7,9,7,9,11,12,
 11,12,15,17,15,17,21,22,21,22,27,29,27,29,36,36,
 36,36,45,47,45,47,57,58,57,58,69,73,69,73,86,88,
 86,88,103,109,103,109,125,130,125,130,147,157,147,
 157,176,184,176,184,205,220,205,220,241,256,241,
 256]