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A254483 as a triangular array

512
26962696
122601129312260
47140504545045447140
170504170900211579170900170504
586508603895686988686988603895586508
1964388199028622891732539310228917319902861964388
646270865571797113819

A254483 as a square array

5122696122604714017050458650819643886462708
2696112935045417090060389519902866557179
122605045421157968698822891737113819
471401709006869882539310
1705046038952289173
5865081990286
1964388
5122696122604714017050458650819643886462708
2696112935045417090060389519902866557179
122605045421157968698822891737113819
471401709006869882539310
1705046038952289173
5865081990286
1964388