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A357498 as a triangular array

1
13
125
1249
123511
1235817
123461021
1234691429
123457101633
1234579132041
123456811152347
12345681013182857

A357498 as a square array

111111111111
32222222222
5433333333
955444444
118665555
171097766
211410988
2916131110
33201513
412318
4728
57
111111111111
32222222222
5433333333
955444444
118665555
171097766
211410988
2916131110
33201513
412318
4728
57