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A267747 as a simple table

na(n)
10
21
330
431
560
661
790
891
9120
10121
11150
12151
13180
14181
15210
16211
17240
18241
19270
20271
21300
22301
23330
24331
25360
26361
27390
28391
29420
30421
31450
32451
33480
34481
35510
36511
37540
38541
39570
40571
41600
42601
43630
44631
45660
46661
47690
48691
49720
50721
51750
52751
53780
54781
55810
56811
57840

[0,1,30,31,60,61,90,91,120,121,150,151,180,181,
 210,211,240,241,270,271,300,301,330,331,360,361,
 390,391,420,421,450,451,480,481,510,511,540,541,
 570,571,600,601,630,631,660,661,690,691,720,721,
 750,751,780,781,810,811,840]