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A257232 as a triangular array

1
20
310
4211
53220
643311
7544220
86553311
976644221
10877553321
119886644320

A257232 as a square array

1234567891011
0123456789
012345678
12345678
0123456
123456
01234
1234
123
12
0
1234567891011
0123456789
012345678
12345678
0123456
123456
01234
1234
123
12
0