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A251326 as a triangular array

10
2828
7811678
220474474220
618198228041982618
17408218172161721682181740
489434288104058157312104058342884894
137721426006364041405454140545463640414260013772
387465942363866110

A251326 as a square array

102878220618174048941377238746
281164741982821834288142600594236
784742804172161040586364043866110
2201982172161573121405454
61882181040581405454
174034288636404
4894142600
13772
102878220618174048941377238746
281164741982821834288142600594236
784742804172161040586364043866110
2201982172161573121405454
61882181040581405454
174034288636404
4894142600
13772