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A215241 as a triangular array

1
11
341
182691
17225699161
231334891416264251
4062661696256505120575361
8873261352518569772117980144501098491
2328296435566368150990423193728410850346081911641
7155401401094499820466865280100049120132597051186857736963104811

A215241 as a square array

1131817223134062688732623282964715540140
14262563489616961352518355663681094499820
199914162565056977215099042466865280
11626451201179803193728100049120
1255751445041085013259705
1361098346081186857
149191173696
1643104
181
1
1131817223134062688732623282964715540140
14262563489616961352518355663681094499820
199914162565056977215099042466865280
11626451201179803193728100049120
1255751445041085013259705
1361098346081186857
149191173696
1643104
181
1