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A162840 as a simple table

na(n)
00
11
2666666
31377789
41377798
51377879
61377897
71377978
81377987
91378779
101378797
111378977
121379778
131379787
141379877
151387779
161387797
171387977
181389777
191397778
201397787
211397877
221398777
231555888
241558588
251558858

[0,1,666666,1377789,1377798,1377879,1377897,
 1377978,1377987,1378779,1378797,1378977,1379778,
 1379787,1379877,1387779,1387797,1387977,1389777,
 1397778,1397787,1397877,1398777,1555888,1558588,
 1558858]