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A128876 as a simple table

na(n)
01
19
2109
3990
41099
599900
6100999
71008891
81109890
99888011
1050549945
11212087791
121110988900
139099998991
1410210987891
15100998890010
161020199887991
171121198778001
1812232187668001
1950049949450005
20212431985468021

[1,9,109,990,1099,99900,100999,1008891,1109890,
 9888011,50549945,212087791,1110988900,9099998991,
 10210987891,100998890010,1020199887991,
 1121198778001,12232187668001,50049949450005,
 212431985468021]