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A253281 as a triangular array

0
12
132
3334
44355
454565
3555664
44566655
454676565
5555775666
66566766677
676676676787
67767757

A253281 as a square array

0113443445666
233455455677
23345545567
4555665666
566677677
56667767
4555665
566677
5666
677
78
7
0113443445666
233455455677
23345545567
4555665666
566677677
56667767
4555665
566677
5666
677
78
7