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A045475 as a simple table

na(n)
11
21
31
42
52
63
74
85
96
109
1111
1216
1320
1427
1536
1648
1764
1887
19114
20154
21206
22274
23363
24484
25649
26868
271159
281549
292052
302747

[1,1,1,2,2,3,4,5,6,9,11,16,20,27,36,48,64,87,114,
 154,206,274,363,484,649,868,1159,1549,2052,2747]