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A253294 as a triangular array

81
558558
384436003844
26784235462354626784
186624167832140536167832186624
129600011849281029888102988811849281296000
9000000824348874311368153960743113682434889000000
6256800057474376

A253294 as a square array

815583844267841866241296000900000062568000
5583600235461678321184928824348857474376
38442354614053610298887431136
2678416783210298888153960
18662411849287431136
12960008243488
9000000
815583844267841866241296000900000062568000
5583600235461678321184928824348857474376
38442354614053610298887431136
2678416783210298888153960
18662411849287431136
12960008243488
9000000