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A201972 as a triangular array

1
22
583
1228204
298894405
70262372244706
169752133311845391127
408210444725016314410641688
9855776143161940815526734419322409

A201972 as a square array

125122970169408985
28288826275221045776
320943721333447214316
4402441184501619408
570539314415526
611210647344
71681932
8240
9
125122970169408985
28288826275221045776
320943721333447214316
4402441184501619408
570539314415526
611210647344
71681932
8240
9