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A187920 as a triangular array

1
21
1441
1343261
14823245481
17818369657880101
226214453166810904110121
298420658315285278110081310144141
4050389077693481113854140936164901804182161
561957362106250144150047461870352216002234722394224181

A187920 as a square array

1214134148217818226214298420640503890561957362
14323243696453165831527769348106250144
1654578681085278111385415004746
1880904110081409361870352
110110131016490216002
112144180423472
1141822394
116224
118
1
1214134148217818226214298420640503890561957362
14323243696453165831527769348106250144
1654578681085278111385415004746
1880904110081409361870352
110110131016490216002
112144180423472
1141822394
116224
118
1