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A250691 as a triangular array

104
543520
254129202512
11150139061524611736
4700260508746317632053032
193117249512324648383440362241233300
78055199562413154461670016184895316474601005121
3122604389454250985906671458

A250691 as a square array

104543254111150470021931177805513122604
520292013906605082495129956243894542
2512152467463132464813154465098590
117367632038344016700166671458
530323622411848953
2333001647460
1005121
104543254111150470021931177805513122604
520292013906605082495129956243894542
2512152467463132464813154465098590
117367632038344016700166671458
530323622411848953
2333001647460
1005121