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A068910 as a simple table

na(n)
00
11
22
33
44
510
6100
7120
8130
9140
101000
1110000
1210100
1310200
1410300
1510400
16100000
171000000
181001000
191002000
201003000
211004000
2210000000
23100000000
24100010000
25100020000
26100030000
27100040000
281000000000
2910000000000

[0,1,2,3,4,10,100,120,130,140,1000,10000,10100,
 10200,10300,10400,100000,1000000,1001000,1002000,
 1003000,1004000,10000000,100000000,100010000,
 100020000,100030000,100040000,1000000000,
 10000000000]