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A047534 as a simple table

na(n)
10
21
32
43
57
68
79
810
911
1015
1116
1217
1318
1419
1523
1624
1725
1826
1927
2031
2132
2233
2334
2435
2539
2640
2741
2842
2943
3047
3148
3249
3350
3451
3555
3656
3757
3858
3959
4063
4164
4265
4366
4467
4571
4672
4773
4874
4975
5079
5180
5281
5382
5483
5587
5688
5789

[0,1,2,3,7,8,9,10,11,15,16,17,18,19,23,24,25,26,
 27,31,32,33,34,35,39,40,41,42,43,47,48,49,50,51,
 55,56,57,58,59,63,64,65,66,67,71,72,73,74,75,79,
 80,81,82,83,87,88,89]