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A041824 as a simple table

na(n)
020
121
2104
3437
4978
52393
63371
712506
8165949
9178455
10344404
11522859
12867263
1311797278
1436259097
1548056375
16132371847
17312800069
181383572123
195847088561
207230660684
21295073515921
22302304176605

[20,21,104,437,978,2393,3371,12506,165949,178455,
 344404,522859,867263,11797278,36259097,48056375,
 132371847,312800069,1383572123,5847088561,
 7230660684,295073515921,302304176605]