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A337123 as a simple table

na(n)
10
21
32
41
54
65
77
85
99
108
1112
127
1311
147
1511
169
1714
1810
1918
2011
2121
227
239
2411
2516
264
278
289
297
3012
3118
3213
3314
3411
3510
369
3718
387
3912
4010
4118
4212
4322
445
4511
4613
4716
4813
4922
508
519
5216
5313
549
5513
5614
5710
5811
5910
6010
6120
6215
639
6410
6513
668
6722
6810
6910
7010
7112
7213

[0,1,2,1,4,5,7,5,9,8,12,7,11,7,11,9,14,10,18,11,
 21,7,9,11,16,4,8,9,7,12,18,13,14,11,10,9,18,7,12,
 10,18,12,22,5,11,13,16,13,22,8,9,16,13,9,13,14,10,
 11,10,10,20,15,9,10,13,8,22,10,10,10,12,13]