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A063009 as a simple table

na(n)
00
11
2100
3121
410000
510201
612100
712321
81000000
91002001
101020100
111022121
121210000
131212201
141232100
151234321
16100000000
17100020001
18100200100
19100220121
20102010000
21102030201
22102212100
23102232321
24121000000
25121022001

[0,1,100,121,10000,10201,12100,12321,1000000,
 1002001,1020100,1022121,1210000,1212201,1232100,
 1234321,100000000,100020001,100200100,100220121,
 102010000,102030201,102212100,102232321,121000000,
 121022001]