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A257569 as a triangular array

0
12
334
4455
55566
666677
6767787
77778888
787879898
8888889999
8989898109109
9999999910101010
8109108

A257569 as a square array

0134566778898
2345677889910
45566778899
56677889910
677878898
7889899
788989
899109
89910
91010
910
10
0134566778898
2345677889910
45566778899
56677889910
677878898
7889899
788989
899109
89910
91010
910
10

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Last modified September 22 16:18 EDT 2024. Contains 376119 sequences. (Running on oeis4.)