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A054841 as a simple table

na(n)
10
21
310
42
5100
611
71000
83
920
10101
1110000
1212
13100000
141001
15110
164
171000000
1821
1910000000
20102
211010
2210001
23100000000
2413
25200
26100001
2730
281002
291000000000
30111
3110000000000
325
3310010
341000001
351100
3622
37100000000000
3810000001
39100010

[0,1,10,2,100,11,1000,3,20,101,10000,12,100000,
 1001,110,4,1000000,21,10000000,102,1010,10001,
 100000000,13,200,100001,30,1002,1000000000,111,
 10000000000,5,10010,1000001,1100,22,100000000000,
 10000001,100010]