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A393971 as a simple table

na(n)
11
21
32
42
52
63
73
83
94
104
116
126
136
147
159
1610
1710
1811
1912
2015
2116
2217
2319
2421
2523
2625
2729
2830
2933
3037
3140
3243
3347
3451
3555
3661
3765
3871
3977
4083
4189
4297
43103
44112
45122
46131
47141
48151
49161
50173
51188
52199
53214
54230
55247
56264
57282
58300
59320
60344
61366
62391
63417
64445
65474
66505

[1,1,2,2,2,3,3,3,4,4,6,6,6,7,9,10,10,11,12,15,16,
 17,19,21,23,25,29,30,33,37,40,43,47,51,55,61,65,
 71,77,83,89,97,103,112,122,131,141,151,161,173,
 188,199,214,230,247,264,282,300,320,344,366,391,
 417,445,474,505]