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A047381 as a simple table

na(n)
10
21
32
44
55
67
78
89
911
1012
1114
1215
1316
1418
1519
1621
1722
1823
1925
2026
2128
2229
2330
2432
2533
2635
2736
2837
2939
3040
3142
3243
3344
3446
3547
3649
3750
3851
3953
4054
4156
4257
4358
4460
4561
4663
4764
4865
4967
5068
5170
5271
5372
5474
5575
5677
5778

[0,1,2,4,5,7,8,9,11,12,14,15,16,18,19,21,22,23,25,
 26,28,29,30,32,33,35,36,37,39,40,42,43,44,46,47,
 49,50,51,53,54,56,57,58,60,61,63,64,65,67,68,70,
 71,72,74,75,77,78]