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A223531 as a triangular array

1
76
9115636
172944462052216
43225148200102600216001296
13399755742750530100016740002008807776
4957907525497810029420550012387600022297680172627246656
213190022512791401350177111711009321669000

A223531 as a square array

17911729432251339975495790752131900225
61564446148200574275025497810012791401350
362052102600530100029420550017711171100
2162160016740001238760009321669000
129620088022297680
77761726272
46656
17911729432251339975495790752131900225
61564446148200574275025497810012791401350
362052102600530100029420550017711171100
2162160016740001238760009321669000
129620088022297680
77761726272
46656