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A138373 as a simple table

na(n)
11
23
33
45
56
68
79
810
99
1013
1113
1215
1315
1418
1519
1620
1722
1822
1924
2025
2126
2227
2329
2430
2532
2633
2734
2835
2936
3038
3139
3240
3341
3443
3544
3645
3747
3847
3949
4050
4152
4253
4354
4455
4556
4658
4757
4860
4961
5062
5164
5264
5367
5468
5568
5671
5772
5873
5974
6075
6176
6278
6378
6480
6582
6683
6784
6885
6986
7088
7188
7290

[1,3,3,5,6,8,9,10,9,13,13,15,15,18,19,20,22,22,24,
 25,26,27,29,30,32,33,34,35,36,38,39,40,41,43,44,
 45,47,47,49,50,52,53,54,55,56,58,57,60,61,62,64,
 64,67,68,68,71,72,73,74,75,76,78,78,80,82,83,84,
 85,86,88,88,90]