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A083429 as a simple table

na(n)
11
212
3123
41324
512345
6123456
71234576
812345768
9123456789
1011234567890
111011123458697
12101111223457896
1310111112233456897
141011111122334458796
15101111111223344567895
1610111111112233445567968

[1,12,123,1324,12345,123456,1234576,12345768,
 123456789,11234567890,1011123458697,
 101111223457896,10111112233456897,
 1011111122334458796,101111111223344567895,
 10111111112233445567968]