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A178880 as a simple table

na(n)
11
21
32
42
53
65
77
87
910
1017
1117
1248
1356
1431
1558
1657
17518
18677
19674
205160

[1,1,2,2,3,5,7,7,10,17,17,48,56,31,58,57,518,677,
 674,5160]