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A185905 as a triangular array

1
55
152515
35757535
7017522517570
126350525525350126
210630105012251050630210
330105018902450245018901050330
4951650315044104900441031501650495
71524754950735088208820735049502475715
10013575742511550

A185905 as a square array

151535701262103304957151001
525751753506301050165024753575
157522552510501890315049507425
35175525122524504410735011550
703501050245049008820
126630189044108820
210105031507350
33016504950
4952475
715
151535701262103304957151001
525751753506301050165024753575
157522552510501890315049507425
35175525122524504410735011550
703501050245049008820
126630189044108820
210105031507350
33016504950
4952475
715