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A250611 as a triangular array

11
2626
576457
120140140120
247290297290247
502586592592586502
1013117211531126115311721013
20362336223620922092223623362036
408346544353389036913890435346544083
81789278

A250611 as a square array

1126571202475021013203640838178
26641402905861172233646549278
57140297592115322364353
120290592112620923890
247586115320923691
502117222363890
101323364353
20364654
4083
1126571202475021013203640838178
26641402905861172233646549278
57140297592115322364353
120290592112620923890
247586115320923691
502117222363890
101323364353
20364654
4083