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A137481 as a triangular array

1
83
24489
-19221621627
-2976-2304129686481
-57600-44640-1728064803240243
-1336320-1036800-401760-1036802916011664729
-36126720-28062720-10886400-2812320-544320122472408242187
-1114767360-867041280-336752640-87091200

A137481 as a square array

1824-192-2976-57600-1336320-36126720-1114767360
348216-2304-44640-1036800-28062720-867041280
92161296-17280-401760-10886400-336752640
278646480-103680-2812320-87091200
81324029160-544320
24311664122472
72940824
2187
1824-192-2976-57600-1336320-36126720-1114767360
348216-2304-44640-1036800-28062720-867041280
92161296-17280-401760-10886400-336752640
278646480-103680-2812320-87091200
81324029160-544320
24311664122472
72940824
2187