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A375570 as a simple table

na(n)
10
21
32
42
54
65
73
83
98
109
114
1211
1312
1413
154
164
1716
1817
1918
2019
2120
226
2322
2423
2524
265
2726
2827
297
3029
315
325
3332
3433
3534
3635
378
3837
3938
4039
4140
426
4342
4443
4544
469
4746
4847
4948
5049
5150
5251
5352
5453
5554
5610
576
5857
5958
6059
6160
6261
636
646
6564
6665
6711
6867
6968
7069
7170

[0,1,2,2,4,5,3,3,8,9,4,11,12,13,4,4,16,17,18,19,
 20,6,22,23,24,5,26,27,7,29,5,5,32,33,34,35,8,37,
 38,39,40,6,42,43,44,9,46,47,48,49,50,51,52,53,54,
 10,6,57,58,59,60,61,6,6,64,65,11,67,68,69,70]