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A257895 as a triangular array

1
11
121
1641
1123681
160144216161
120360017281296321
11403600216000207367776641
12801764007200012960000248832466561281
125207056002469600012960000777600000

A257895 as a square array

1111111111
1261260201402802520
143614436003600176400705600
1821617282160007200024696000
1161296207361296000012960000
1327776248832777600000
16446656
1128
1

A257895 as an upper right triangle

1111111111
1261260201402802520
143614436003600176400705600
1821617282160007200024696000
1161296207361296000012960000
1327776248832777600000
16446656
1128
1

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Last modified September 25 18:21 EDT 2020. Contains 337344 sequences. (Running on oeis4.)