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A187784 as a triangular array

1
01
102
1606
7836024
21100602400120
141372117048018000720
743358451661344042001512005040
569922864673686854415960040320141120040320
422412256845022001161216922320199584042336014515200362880

A187784 as a square array

1011721141743569942241
1068100372358422864225684
2036601170516667368502200
6024048013440685441161216
24018004200159600922320
120015120403201995840
7200141120423360
504001451520
403200
362880
1011721141743569942241
1068100372358422864225684
2036601170516667368502200
6024048013440685441161216
24018004200159600922320
120015120403201995840
7200141120423360
504001451520
403200
362880