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A207981 as a triangular array

1
22
575
15676715
5210804192108052
2032528758720858720825287203
877794545147512732953124784147512732794545877
41403185803458668937932341031059091234103105909125866893793231858034

A207981 as a square array

12515522038774140
276710802528779454531858034
567419258720814751273258668937932
1510805872089531247843410310590912
52252871475127323410310590912
20379454558668937932
87731858034
12515522038774140
276710802528779454531858034
567419258720814751273258668937932
1510805872089531247843410310590912
52252871475127323410310590912
20379454558668937932
87731858034