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A204309 as a triangular array

256
24002400
225005168022500
16200010779781077978162000
11664001505739247834122150573921166400
7157160209106648127178912512717891252091066487157160
43917129220440021032895567670

A204309 as a square array

2562400225001620001166400715716043917129
2400516801077978150573922091066482204400210
22500107797847834122127178912532895567670
162000150573921271789125
1166400209106648
7157160
2562400225001620001166400715716043917129
2400516801077978150573922091066482204400210
22500107797847834122127178912532895567670
162000150573921271789125
1166400209106648
7157160