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A172428 as a triangular array

1
11
1-81
1661
1-8060-801
1120120012001201
1-72810920-14560010920-7281
150404586409172800917280045864050401
1-65604132800-501446400752169600-5014464004132800-65601
1362880297561600249951744000227456087040022745608704002499517440002975616003628801

A172428 as a square array

1111111111
1-86-80120-7285040-6560362880
16601200109204586404132800297561600
1-801200-1456009172800-501446400249951744000
11201092091728007521696002274560870400
1-728458640-5014464002274560870400
150404132800249951744000
1-6560297561600
1362880
1
1111111111
1-86-80120-7285040-6560362880
16601200109204586404132800297561600
1-801200-1456009172800-501446400249951744000
11201092091728007521696002274560870400
1-728458640-5014464002274560870400
150404132800249951744000
1-6560297561600
1362880
1

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Last modified September 22 13:01 EDT 2024. Contains 376114 sequences. (Running on oeis4.)