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A137478 as a triangular array

1
11
241
61891
3012090201
24012001200400401
31201872023400104001560781
655204586406879603822007644057331471
22276801782144031187520207916805197920519792199922721

A137478 as a square array

1126302403120655202227680
141812012001872045864017821440
199012002340068796031187520
1204001040038220020791680
1401560764405197920
1785733519792
114719992
1272
1
1126302403120655202227680
141812012001872045864017821440
199012002340068796031187520
1204001040038220020791680
1401560764405197920
1785733519792
114719992
1272
1