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A066920 as a simple table

na(n)
11
21
32
42
52
63
74
84
96
107
117
129
1311
1412
1515
1618
1719
1823
1926
2028
2134
2239
2342
2449
2556
2660
2769
2879
2985
3097
31110
32118
33133
34150
35162
36181
37203
38219
39243
40271
41292
42323
43359
44387
45425
46471
47507
48554
49612
50659
51719
52791
53851
54924
551012
561089
571179
581289
591386
601497
611630

[1,1,2,2,2,3,4,4,6,7,7,9,11,12,15,18,19,23,26,28,
 34,39,42,49,56,60,69,79,85,97,110,118,133,150,162,
 181,203,219,243,271,292,323,359,387,425,471,507,
 554,612,659,719,791,851,924,1012,1089,1179,1289,
 1386,1497,1630]