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A038669 as a simple table

na(n)
10
21
32
44
54
66
77
89
910
1011
1112
1215
1315
1417
1518
1620
1720
1823
1923
2025
2127
2229
2329
2432
2532
2633
2734
2837
2938
3040
3140
3242
3344
3445
3546
3650
3750
3851
3952
4054
4154
4257
4357
4460
4561
4662
4763
4866
4967
5068
5169
5271
5371
5474
5575
5678
5779
5881
5981
6084
6184
6285
6387
6489
6589
6692
6792
6894
6995
7097
7197
72101

[0,1,2,4,4,6,7,9,10,11,12,15,15,17,18,20,20,23,23,
 25,27,29,29,32,32,33,34,37,38,40,40,42,44,45,46,
 50,50,51,52,54,54,57,57,60,61,62,63,66,67,68,69,
 71,71,74,75,78,79,81,81,84,84,85,87,89,89,92,92,
 94,95,97,97,101]