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A182973 as a simple table

na(n)
12
23
34
43
55
66
75
84
97
105
118
127
135
149
157
1610
179
188
197
206
2111
227
2312
2411
2510
269
278
287
2913
3011
319
3214
3313
3411
358
3615
3713
3811
399
4016
4115
4214
4313
4412
4511
4610
479
4817
4913
5011
5118
5217
5316
5415
5514
5613
5712
5811
5910
6019
6117
6213
6311
6420
6519
6617
6716
6813
6911
7021
7119
7217
7315
7413
7522
7621
7720
7819
7918
8017
8116
8215
8314
8413
8512

[2,3,4,3,5,6,5,4,7,5,8,7,5,9,7,10,9,8,7,6,11,7,12,
 11,10,9,8,7,13,11,9,14,13,11,8,15,13,11,9,16,15,
 14,13,12,11,10,9,17,13,11,18,17,16,15,14,13,12,11,
 10,19,17,13,11,20,19,17,16,13,11,21,19,17,15,13,
 22,21,20,19,18,17,16,15,14,13,12]